All of iGCSE Circle Theorems: Everything You Need To Know

[@GingerMathematician]

If you would like to go through other iGCSE Maths topics in depth, check out the All of iGCSE Playlist here: kzbin.info/aero/PLYNwTLhq9xZbbYnEipbmqFWb4b-NpOkpd

[@hazelcloud4520]

Thank you! You are definitely the best math tutor on KZbin for igcses.

[@GingerMathematician]

Wow, thank you 🙂! I hope to develop the channel and look at expanding the content through 2022 👍

[@lucia6652]

@@GingerMathematician how about you take a look at edexcel one day!

[@Adira28]

your videos help me understand concepts much more clearly , thank you!

[@GingerMathematician]

Great to hear 😊

[@Naiyaalis]

I've been having issues with this topic but this video helped me significantly. Thank you so much!

[@GingerMathematician]

Great to hear Naiya 🙂 👍

[@afconbtw]

I truly respect you, I am very weak at math and certainly a few other subjects such as chemistry… but with your help and a few other people, I have truly improved, thank you very much.

[@GingerMathematician]

Happy to help! :-)

[@lenailistra6459]

thank you for your videos they are helping me revise for the exam tomorrow. grateful I found your channel:)

[@GingerMathematician]

Best of luck Lenallistra for tomorrow 😊

[@ASRGRULZ87]

Thank you so much sir, you are really one of the best math tutors, and if possible please consider teaching igcse addmath too. I would really appreciate it.🙏

[@GingerMathematician]

An All of iGCSE Add Maths is (slowly) in the works... 🙂

[@GingerMathematician]

Now here: kzbin.info/www/bejne/h4KoZJmVaLujjKM

[@K_I_N_G7]

Thank you so much for this video. IGCSE Maths will definitely be a breeze in a few weeks. Cant' wait!

[@GingerMathematician]

No problemo 😊👍

[@yorkzie7593]

he is so concise and barely any seconds wasted

[@GingerMathematician]

Like to keep it simple and to the point 😊😊

[@keshalianelson8055]

So helpful ❤❤❤🎉🎉🎉thank you so much ❤❤❤❤wish you were my maths teacher 😊😊😊😊😊😊

[@GingerMathematician]

Thank you Keshalia 😊

[@jadebezuidenhout5566]

Mr Gower you are absolutely fantastic ! Many thanks 🙏

[@GingerMathematician]

How's the revision going Jade? 👍

[@jadebezuidenhout5566]

@@GingerMathematician so far so good sir 🙏

[@eugebedoya3156]

I love your video! It was very helpful, thank you for helping me along with others to understand math in a better way!

[@GingerMathematician]

Great to hear :-)

[@Iamaniger]

you are the most underrated KZbinr, thanks a lot for your help!

[@GingerMathematician]

Thank you please spread the word 🙂👍

[@shade.o9956]

Thank you so much! you have no idea on how much you helped me.🙏

[@GingerMathematician]

No problemo 😊 😊

[@niveeidhapalani7249]

ur videos are so so helpful!! thank u so much! u just earned a new subscriber may god bless all ur hard work!

[@GingerMathematician]

Thank you :-)

[@other9449]

thank you sir, the subs have been increasing and your videos make my day better. Thank you bruh man I really appreciate you

[@GingerMathematician]

I appreciate that 🙂 Glad I can share my knowledge and experience to a wider audience!

[@v0id3333]

angle B in 42:19 is 90° since angle facing the diameter is 90°!

[@GingerMathematician]

Lol I think I mention that later in the video... but shows you can take one of many routes to the correct answers 😂

[@evangelinefrost9320]

Thank you so much your videos are extremely helpful😁, appreciate the help🙏❤

[@GingerMathematician]

No problem Evangeline 😊👍

[@christopherpezet1012]

Thank you very much it helped me a lot 😊

[@GingerMathematician]

You're welcome 😊 Any video requests please let me know!

[@enam.lawana]

Thank you so much sir I learnt more than what I was taught in a year on the day before my paper

[@GingerMathematician]

So long as you learn it that's what counts Enam 👍

[@itzzeeky]

im gonna miss watching u after i finish my exams

[@GingerMathematician]

Always welcome back... teach others what you have learnt here?! 🤔

[@saramehrgan224]

can you please make a part 2 whenever you've got time?- this vid was really helpful!!!!

[@GingerMathematician]

Hi Sara, this video seems very popular so more than happy to look at making a Part 2 🙂👍

[@loluwu231]

Thank you so much sir. This topic seemed complicated but you made it seem so easy

[@GingerMathematician]

Thank you do my best 🙂👍

[@RaunakLumde]

38:17 you could've just used the smaller rectangle, 180-70=110 by cyclic quads, there are two quadrilaterals

[@GingerMathematician]

True 🙂👍

[@KhaledalMeleihi]

BRO UR A LIFE SAVER THANK YOU SO MUCH

[@GingerMathematician]

Pas de problem 😊

[@yazanhousrom3858]

You're great!!!. Thank you, this made everything so much simpler. GOAT

[@GingerMathematician]

Fantastic to hear Yazan, you're welcome 😊👍

[@GingerMathematician]

Fantastic to hear Yazan, you're welcome 😊👍

[@mithilaahmed5750]

Thank you, you are the best teacher, i really like ur teaching

[@GingerMathematician]

Glad it's making sense Mithila 😊👍

[@nicolemutetwa2279]

Thank you. Thank you. Thank you! You are a lifesaver.

[@GingerMathematician]

No problem Nicole 😊 - when are your iGCSE exams?

[@nicolemutetwa2279]

I'm writing maths on the 17th. Hoping for the best!

[@Bfbfbdnxnd]

I really appreciate you

[@lisamwembia7781]

im so grateful for ur chanel writing in october

[@GingerMathematician]

No problem Lisa, have you been through the All of iGCSE Playlist?

[@MiraalSheikh_27]

thankyou so much.😇😇😇😇😇

[@GingerMathematician]

No problem 👍

[@rafi7802]

Got my paper 2 exam on monday, thank you so much!

[@GingerMathematician]

You're welcome! Good luck with the exam!

[@rowlgaming463]

Thanks a lot for your wonderful and easy explain and it really helps

[@GingerMathematician]

Glad to hear that! :-)

[@ishadheepak]

wow, thank you so much, this was extremely helpful!!

[@GingerMathematician]

Great to hear 😊👍

[@definitelyhimank1804]

Thank you Mr.Ginger u taught me how to spot the annoying ones helped me in school

[@GingerMathematician]

Great to hear :-)

[@mebratumamo820]

Wow you are really amazing teacher.thanks for all of your support in my maths IGCSE exam which I will take next year.

[@GingerMathematician]

No problem Mebratu keep working hard 👍

[@AtharvMishra-v5s]

I hope you start up with CBSE Maths if you can, I'm in IGCSE now but will be in CBSE too (Grade 11 and 12/ AS and A Level, and there no calculators are allowed, you could help us a lot as all IGCSE/AS/A levels have been uploaded by you already, you'll have a new challenge too!, and I guarantee you will see your channel growing faster than speed of light.)

[@GingerMathematician]

Thanks for the suggestion! I'm always looking for ways to expand my knowledge base. Adding CBSE Maths content is a great idea, and I'll definitely consider it for future development. The challenge of handling exams without calculators is interesting. It would require a different approach to problem-solving, which could be a valuable addition to my capabilities. I can't guarantee a specific timeline, but I'll keep your request in mind as I explore new content areas.

[@Aisha-gd6dq]

This topic is mad and you made it a little easier. Thanks

[@GingerMathematician]

Thank you Aisha 😊👍

[@richardpowell4667]

@3:04. Not a cyclic quad there already? Isn't ABCD a cyc quad? They are all points on the circle. (4:53 - Are all vertices on the circumference - Yes, it's given). Or is there some rule that the quad has to be in opposite parts of the diameter? Thanks

[@GingerMathematician]

You can use that cyclic quad straight away Richard yes 🙂 👍

[@solomonendryas3833]

thanks these videos are really helpful i really appreciate it

[@GingerMathematician]

No worries I'll keep adding to the playlist 😊👍: kzbin.info/aero/PLYNwTLhq9xZbbYnEipbmqFWb4b-NpOkpd

[@ItsJoeyBrown]

Thank you so so much sir!! I'm doing my IGSCEs at the moment, and whenever I struggle to understand a topic, I come straight to your channel! You make everything so clear and practical, and I really appreciate your hard work making these videos. They help so much :)

[@GingerMathematician]

That's amazing to hear! Keep up the good work Joey and good luck with your IGCSE Exams! 😊

[@ItsJoeyBrown]

Thank you so much! I'll let you know how they go.

[@ItsJoeyBrown]

Hello Sir... just an update... I got 80% average for my Math exam

[@vaibhavVKSSHOW]

The best one for IGCSE maths

[@GingerMathematician]

Thank you 😊

[@TeacherAlvinChan]

Awesome! Thanks for the help

[@GingerMathematician]

No problem 🙂👍 Please share 🙂

[@sissi9100]

Thanks, I’ve been stressing about something non school related and it has distracted me from studying well, I have 4 days left and I don’t know if I can finish what I have left on time but I’m just going to use your videos and some more practice

[@GingerMathematician]

Just keep going is the most important advice at the moment Sissi 😊👍

[@yanaung1778]

Thank you so much for this video.

[@GingerMathematician]

Hope Circle Theorems are now a little easier 😊👍

[@AvisAnimations]

Hi! i just wanted to ask why is it at 6:25 , you just sorta used the cyclic quad approach instead of just adding 3x and 6x, considering the fact that it is a triangle after all and it should add up to 180 degrees

[@GingerMathematician]

Can also do that too :-)

[@shiv.shankar]

Thanks a lot for this video sir.

[@GingerMathematician]

No problem Shiv, some interesting similarity questions embedded as well 👍

[@shiv.shankar]

@@GingerMathematician 👍

[@kksrihari3268]

Thank you sir 🙏

[@GingerMathematician]

No problem 😊👍 Vectors coming out soon too 👍

[@JayeDee17]

This video was really helpful! I really loved it and it's helped me clear my doubts on the topic of Circle Theorem. Also, I would like to ask how I may get the app you used as a calculator on my laptop.

[@GingerMathematician]

I'm thrilled to hear that you found the video helpful and that it cleared up your doubts about Circle Theorems! As for getting the calculator app on your laptop, you can download the necessary software from the official websites of TI (Texas Instruments) or Casio. They usually provide software emulators for their calculators that you can use on your computer. Just visit their websites and look for the "Downloads" or "Software" section to find the appropriate emulator for your calculator model. Keep up the great learning and feel free to ask if you have any more questions! 😊📐🎉

[@PyschoMantis-ol5uk]

SO HELPFUL THANKS❤

[@GingerMathematician]

No problemo 😊👍

[@fine-jumble2114]

At 37:28 why can we use y since it is at the circumference and make it 70

[@GingerMathematician]

But is y acute or obtuse?

[@FaisalSultan-b7n]

Love from all igcse students❤

[@tasbiha114]

please make a part two of this video! it would be immensely helpful.

[@GingerMathematician]

Noted Tashiba 🙂👍

[@mustafagaming1089]

at 22:00 if we do cos inverse (4.6 squared - 2 squared - 5 squared/ 2 times 2 times 5) thats fine as well right

[@GingerMathematician]

It is!

[@__-pz4hc]

THANK YOU!!! YOU ARE THE BEST!!! IM GONNA PASS MY TEST BECAUSE OF YOU TOMMOROW, THANK YOU ONCE GAIAN!!!

[@GingerMathematician]

Best of luck for tomorrow 🙂

[@mathskafunda4383]

TYSM! You should have super thanks on, so that we could donate to you.@@GingerMathematician

[@Hoellz]

I want to punch the air everytime I see congested triangles in a circle like some toddler scribbled on the circle

[@GingerMathematician]

Haha love the enthusiasm 😅

[@mariyam912]

This video was really helpful, highly appreciate it. Would it be possible for you make a part 2?

[@GingerMathematician]

Had a few requests for this Mariyam, will look into it 👍

[@mariyam912]

@@GingerMathematician appreciated

[@SaharshPotturi]

Thanks for the vids! I have my paper 2 in a few hours lol

[@GingerMathematician]

And how did it go?

[@SaharshPotturi]

@@GingerMathematician I did really well! I messed up one question though, i guess i have to focus on preparing for paper 4 now

[@Mahalovescat]

I LOVEEEE UR VIDEOS TUANK U FOR HELPING ME OUT

[@GingerMathematician]

No problemo :-)

[@MrStealthy007]

Hey Sir, great video; but is there any specific reason why you didn't take the whole triangle ABC at about 35:00? The whole quadrilateral thing is a bit confusing.

[@GingerMathematician]

No reason, taking the triangle and using that is a great alternative method 🙂

[@MrStealthy007]

@@GingerMathematician Thanks Sir!

[@gtwtox1c64]

Hi i would like to ask which line do you mean we use angles on straightline on 10:43

[@GingerMathematician]

Using angles in a triangle add up to 180 degrees here :-)

[@Yosanloko]

thank you 🥰

[@GingerMathematician]

No problem Yosan 🙂👍

[@ahmed.786]

This video has to be the best for circle theorems

[@GingerMathematician]

Thank you for the appreciation Ahmed! 👍

[@mahimannbhardwaj3079]

Thank You so much for this Video !!!

[@GingerMathematician]

No problem Mahimann 😊👍

[@lyb11maya]

I have a question why you can use cyclic quad rule on question 5 ( 32:02 ) but on first and next questions u cant?

[@GingerMathematician]

It can't be used in the first problem because a cyclic quadrilateral is one in which all 4 of its vertices lies on a circle, whereas in the first problem, there is one vertex that is not on the circle!

[@vaibhavVKSSHOW]

Love your video brother

[@GingerMathematician]

Appreciated 👍

[@petertan9310]

This video helped, I have an exam about this - Thanks!

[@GingerMathematician]

Great to hear Peter - good luck for the exam 🙂🤞

[@nrv2478]

thank you very much for helping me understand they type of question I will receive in my exams!

[@GingerMathematician]

I believe in you! Go out there and show them what you know

[@KylaNicoleTee]

thank you so much please touch on exponential equations

[@GingerMathematician]

Interesting topic Kyla, thank you for the suggestion 🙂👍

[@ray_sun]

thanks for the help!

[@GingerMathematician]

No problem 🙂👍 Please share with anyone with iGCSE Maths exams coming up 👍

[@ipfocusx2646]

I always thought you were british, never thought of you being german. Anyways, it feels like you're way more passionate to teach us than our teachers. Love you energy and tricks. Thanks for the vid :)

[@GingerMathematician]

I am British but I have lived in Germany for almost a decade 😊 - fast eingedeutscht 😉

[@lordcigo7496]

bro u for real saved my life i love you the best math teacher ill make a edit of you after my exams

[@GingerMathematician]

Lol looking forward to it 😅

[@shiv.shankar]

7:23 can we do 6x+3x+x=180. So 10x=180. So, x=18?

[@GingerMathematician]

Exactly Shiv 👍

[@shiv.shankar]

@@GingerMathematician 👍

[@Ace-rt5bt]

Do you have a video on explaining the rules first? As I don't know any of them

[@GingerMathematician]

Not yet...

[@faizahassan6696]

Hello gingerr sir thank you✨

[@GingerMathematician]

No problem Faiza 👍

[@layalamir]

how did we get 72 10:37 ?

[@GingerMathematician]

Angles on a straight line with the 108 we already worked out :-)

[@Bfbfbdnxnd]

Thank you thank u thank u

[@Fastdawgofficial]

How do you solve 45:30

[@GingerMathematician]

Which question?

[@AftecGamerzOfficial]

Sir, at part 38:00 I didn't understand why are both angles same (70 degrees)

[@GingerMathematician]

They both are angles in the same segment, subtended by the same arc!

[@AftecGamerzOfficial]

@@GingerMathematician Thanks!!! Really Helpful!

[@Farzanakhajjak]

Sir i do have a question, In a isoceles triangle wouldn't the 2nd angle be 72 degrees in Q12, since 2 sides and angles are the same, if not sir can u clear the conseption?

[@agamarora3863]

Sir, for the 7th question at 38:04, to find y I made a trapezium and used cyclic quad by applying the formula 180-110. Is that correct too?

[@GingerMathematician]

Yep Agam that also works 😊

[@aaran3559]

Thank you Sir this has helped me a lot my Maths Paper 4 is tomorrow

[@aaran3559]

@@malaikadar4365 I will 🙏

[@GingerMathematician]

Best of luck Malaika and Aaran 👍

[@rowanr4945]

thank u sm omg paper 4 is on monday

[@GingerMathematician]

Not long!

[@aarushsangani]

thanks alot

[@GingerMathematician]

No problem Aarush 😊👍

[@salahmagdi2622]

Hey i dont really get why u put angle B in CBD as 35degree in minute 25:46

[@GingerMathematician]

Because both angles are on the arc CD

[@foxyfoxfilms]

Mr. Sam, do you have a video/ do you have any ideas of making a video about transformation matrices? I’ve seen a lot of transformation matrices questions and I never get full marks on them - my search on yt and google has always been inconclusive so if you can help me then it will mean a lot thank you.❤

[@GingerMathematician]

No transformation matrices on iGCSE Cambridge 😊👍

[@annelliot622]

Same here.

[@ayomiposi-yx1qv]

thank you

[@GingerMathematician]

No worries 😊👍

[@mathsforfun7935]

Hello. Where is the ppt? I cannot seem to find it in the description box.

[@GingerMathematician]

Hi there, I'll add it to the description; the link is here 😊: docs.google.com/presentation/d/17brSl-RYaUWquiQM-CatWwyugWQ1OO_B/edit?usp=drivesdk&ouid=105274897674597037123&rtpof=true&sd=true

[@mathsforfun7935]

@@GingerMathematician thank you so much!

[@TopG20073]

Soon, I am going to write history, my past. Those board exams will be my past and they will be a part of my history.

[@GingerMathematician]

Just take them one step at a time 😊👍

[@mantosh56]

Sounds like a start for some thrilling adventure!!!

[@TopG20073]

@@mantosh56 4 more exams to go out of 21.

[@crackedadwaid7799]

I think you r extremely underrated bro, u put so much work in to ur videos.

[@GingerMathematician]

Thank you Adwaid for the appreciation 😊👍

[@caramalizedsalamander9759]

thank u sirrrr

[@GingerMathematician]

No worries Mr. Salamander 😉

[@maazasif3772]

How does angle AED=18 10:10

[@GingerMathematician]

Angles in a triangle add up to 180 😊👍

[@maazasif3772]

​@@GingerMathematician i meant angle AEB

[@FlickPUBGM]

great video

[@GingerMathematician]

Thanks Arman 👍

[@void9330]

i thought cosine rule for angle was b squared + c squared - a squared divided by 2bc

[@GingerMathematician]

Can use different versions 👍

[@hypebeastBS]

Hi im just wondering at 9:48 why u dont consider seeing the entire triangle as isoceles triangle and just do 180 - (18+18)

[@GingerMathematician]

Can also do that too Lou 😊

[@fatima-k9141]

are these question only from 2011?

[@GingerMathematician]

Do you mean 2021? Only from papers in the last 4-5 years...👍

[@fakhruddinkagzi2539]

at 24:11, 180 minus 75 is actually 105

[@GingerMathematician]

Think I correct this later in the video..

[@aboodiali2416]

for the first question (b) why cant u use the rule angle at centre is twice the angle at circumference??

[@GingerMathematician]

You can as well 👍

[@oumietouray9476]

Thanks

[@GingerMathematician]

No worries Oumie 😊👍

[@thichhochoi766]

Q9: No need to draw addition lines. ABCD is cyclic quad. The sum of the opposite is 180 so BAD = 115 (180-65 = 115)

[@GingerMathematician]

This is true :-)

[@jjgeneralknowledge1279]

The properties of cyclic quad is when all the four sides touch the circumference but there is a 5th side