A Really Difficult Similar Triangles Problem | Grade 7+ | GCSE Maths Exam Revision

[@TheGCSEMathsTutor]

🔥Last Day Revision Predicted Paper 3 - 13th June 2022 | Higher Exam Walkthrough | Edexcel - kzbin.info/www/bejne/b3i8kpKAjdh4atk 💎 Every Topic on the Edexcel Paper 3 Exam Advanced Information List - Paper 3 June 13th 2022 - kzbin.info/www/bejne/pZ21mIuEhLmGgpI 💎 Every Topic on the AQA Paper 3 Exam Advanced Information List - Paper 3 June 13th 2022 - kzbin.info/www/bejne/hqTKY36aZdJ7jZo 💎 The 5 Hardest Topics on the Paper 3 Exam June 13th 2022 - kzbin.info/www/bejne/l5zRk56NmKuNjsU 💎 Check out the NEW website now - www.thegcsemathstutor.co.uk 💡Further Revision Videos: 💎 The Entire GCSE in Only 2 Hours!! Higher and Foundation Revision | GCSE Maths Tutor - kzbin.info/www/bejne/bnKWlKWngMdkaas 💎 Everything for a Grade 6-9 in your GCSE Maths Exam! Higher Maths Exam Revision | GCSE Maths Tutor - kzbin.info/www/bejne/pWq5po2eeNaFaLc 💡Show Your Support: If anyone would like to support the channel you can buy me a coffee ☕ here: www.buymeacoffee.com/gcsemathstutor Join this channel 👑 to get access to perks: kzbin.info/door/StPzCGyt5tlwdpDXffobxAjoin Check out the new shop 👕 here: the-gcse-maths-tutor.myspreadshop.co.uk/ Thank you for all of your support! 😁🙏🏼

[@Student01-k7l]

i did not understand why you added 3 + 12 and then times 8?

[@Tristilax]

GCSE Maths ends tomorrow- the journey has been long and winding, good luck to everyone 😃

[@alemi3d]

For those wondering, he has rotated the triangle 90 degrees anticlockwise and reflected it on y axis.

[@sweetlittlenothing7696]

Nice! 🤣

[@drewetpa]

That question is from paper 1 November 2017 in the year when Edexcel decided to make the exams crazy hard and the boundary for a 9 overall was below 80%. Maths Genie have a similar question in their predicted paper 3. I still can't get my head around it! I might just be happy to get 2 marks for working out one of the x values and double checking for errors elsewhere rather than spend an eternity on this and still get it wrong! Hopefully it won't come up!

[@taiyab.0581]

the second value method is so confusing

[@huniyaahmad8274]

@@taiyab.0581 i know right. when i attempted the predicted paper 3 i couldn’t figure out how they got the second value either

[@huniyaahmad8274]

@@taiyab.0581 last minute revision haha 😭😭

[@lukeeeeeeeeeeeeeeeeee-1]

@@huniyaahmad8274 Glad its not just me😭

[@taiyab.0581]

@@lukeeeeeeeeeeeeeeeeee-1 omg thank god that shit wasn't on there😂😂

[@aerodynamix3976]

gl for tmrw everyone

[@su1t0n11]

Thank you for this one sir. I would've never guessed. My first thought was to just do 12/15= 8/x

[@GCSEALevelMaths2025]

Can’t wait for this!! Congratulations on 119k subscriptions!! You should treat yourself to a binley mega chippy (I haven’t been but the hype on social media has gone nuts)!!

[@volkayno5690]

Sir I want to pick maths for Alevel and I was wondering how do you just "know" how to do these things? How do I just "know" to flip the triangle around? I tried the question on my own and I would've never have thought of that in a million years.

[@stezb6379]

how do u even jus know to add that triangle in anyway?

[@zainab8296]

it takes LOTS of practice to acquire these skills, they dont just come to you. thats why people say maths a level is hard

[@sen-ni8ri]

IVE HAD THE EXACT SAME THOUGHT I LITERALLY SAID THE EXACT SAME QUESTION TO MY SIBLING WHO ANSWERED THIS QUESTION

[@ryuxfx52]

@@sen-ni8rime too! Like this EXACT same question. When I’m being taught maths, I always find myself saying BUT WHY? Like okay this fact has been told to me and I actually understood the subsequent calculations, but why did we flip the triangle? How would I approach this in a question with a different explanation.

[@IsmaeelRashid-q2y]

@@stezb6379 because you need to revise 3d trigonometry first :D

[@juniorone582]

Hey gcse maths tutor, I'm a higher level student and I wanted to go through your checklists to solidify my knowledge but I noticed that theirs a foundation checklist as well, with my previous exams I had plenty of time to check both playlists but now I don't, I was wondering as a higher student should I bother watching the foundation tier or no ? Thanks again sir

[@TheGCSEMathsTutor]

No you only need to watch the higher videos on the higher checklist! The foundation videos will have been great to keep up with those lower grades topics and skills but it’s the higher video that you need for sure! 😁🙏🏼

[@juniorone582]

@@TheGCSEMathsTutor omg I have wasted so a good portion of time on those for paper 1 and 2, if anyone reads this let this be proof you should always ask questions if your unsure, thanks gcse maths tutor

[@TheGCSEMathsTutor]

@@juniorone582 I wouldn’t say it’s a waste as it will still have helped, but yes you probably could have used that additional time on the harder topics on the higher paper! But there you go, you know now for the last paper 😁🙏🏼

[@safwanahw6258]

Excuse me sir I don’t attend school and I’m taking part in the gcse maths exams.I’ve been watching your videos but I’ve had trouble finding the write exam practice.What should I do for paper 3 exam practice

[@arioazadi4352]

Hi, I wanted to thank you for all the videos, they are really helpful. I am aiming for grade 8 or 9 and I believe I collected at least 120 marks for paper 1 and 2. Could you please give me a tip for paper 3 considering that I have a time management problem and English is not my first language? Thank you in advance

[@myxion2671]

for time management i would recommend you first go through the entire paper and do all the questions you find easy first. if you get stuck on anything skip past it and do all the questions you are able to do easily first. this means that you dont lose any easy marks by running out of time after getting stuck on a hard question if you sometimes have a hard time understanding the questions since english isnt your first language, it might be good for you to read through past paper and predicted paper questions to get an idea of the way questions are worded. also use my above tip if you are having a hard time with a question, dont waste any time on it until you have gotten all of your easy marks first, so you dont lose any more marks than you need to

[@arioazadi4352]

@@myxion2671 Thanks for the tips mate, I'll do that.

[@IsmaeelRashid-q2y]

@@arioazadi4352 and then bribe the examiner and invigilators to be your prostitute and then they wil lallow u access to a higher grade in the test as you can cheat they your partner i ncrime :) im joking its a joke

[@phoona]

5:01 wouldn't 12 be on the other side if we are rotating?

[@msh1380]

That's what I thought as well...

[@tahaaak]

@@msh1380 same

[@user-qg4td6rg5x]

someone answer this

[@virajmokashi9303]

no because he hasn't rotated it its more like its mirrored

[@virajmokashi9303]

@@user-qg4td6rg5x no because he hasn't rotated it its more like its mirrored

[@mamudouconateh8308]

Thank you

[@parthivsasapu1505]

Hi, I was wondering how you knew to rotate the triangle by 4 cm each way?

[@TheGCSEMathsTutor]

It’s actually flipped over and moved around / rotated it’s a strange concept to demonstrate on a screen! It’s just the two side lengths swapped over 😁🙏🏼

[@SockerTom]

4:45 this is where im lost. Can someone explain where that triangle he drew was for and where it came from?

[@myxion2671]

basically, similar triangles are triangles where all the angles are equal and the lengths are in the same proportion because the big triangle just looks like a scaled up version of the small one, it is easy to immediately assume that AC is just the scaled up vervsion of AB, but actually you can't know for sure that it is. The triangle he drew is basically showing that AC could actually be a scaled up version of AE, and that the triangle is flipped over so that AB and AE switch places before scaling up It doesnt look like that could be possible based on how the triangles look, because they look like they have equal proportions with the small one and are not flipped over, but the diagrams are not to scale and there isnt anything to prove that they arent, which is why you get 2 answers

[@SockerTom]

@@myxion2671 that confused me more lol.

[@mehak.ahmed1]

@@myxion2671 i am so confused rn

[@nia_912]

How is 12cm the smaller length?

[@rh6a]

12+3=15 which is the full length of the triangle side. you then divide 15 by 12 (12 being a part of the full length makes it the smaller length) so you can find the scale factor to get the smaller triangle into the larger one.

[@asmaa1853]

Thank you a lot

[@user-qg4td6rg5x]

where can i find more like this

[@briginshaw1]

Surely this can’t come up in paper 3? If there’s rotation that comes under transformations which is not listed as comi g up

[@R3LO4D]

transformations are on graphs, this doesnt involve any graphs, so this still may come up

[@taiyab.0581]

at 5:10 how did u get them lengths for the red triangles

[@ryuxfx52]

The original AB length is now on the way from A to E

[@hi-pg9bp]

guys do u think it’s good to redo the predicted papers?

[@IsmaeelRashid-q2y]

well duh do u want to sacrifice your grade by losing marks like u could of got a 9 but u lost one mark because u decided not to revise standard from....... imagine.

[@hajraabbas2637]

It's foundation or higher

[@GCSEALevelMaths2025]

This is for higher tier however similar shapes can be for foundation!! This question in this video is specifically for higher tier students!!