Can you find the Angle X? | Quick & Simple Tutorial

[@jjm615]

I love your teaching pattern.

[@PreMath]

Thank you for your feedback! Cheers! You are awesome JJM😀

[@jjm615]

I need University calculus pls. I am late in doing my BEng Civil. So, pls help. Thk you

[@Gargaroolala]

Yes solved this in my mind!

[@PreMath]

Excellent! Cheers! You are awesome Garrick😀

[@ProfessorLX]

Great one, I don't usually have the answer before the last stages of the tutorial but this time I had it early, I guess all your lessons are paying off! Thanks very much!

[@PreMath]

Glad it was helpful! Thank you for your feedback! Cheers! You are awesome Prof😀

[@arthurschwieger82]

Thank you for doing these simple problems. I enjoy geometry and it has been such a long time since I learned these rules, many of them are no longer in my mind. I find it a fun exerciser to try to solve these and in some cases, just to follow what you are doing and understand the steps. My son also seems to enjoy geometry and I have given him one of your problems to solve. With very little help, he was able to solve it. I bet he will solve this one with no problem. 🙂

[@PreMath]

Glad to hear that! I'm sure your son is very smart as well 😀 Thank you for your feedback! Cheers! You are awesome Arthur.😀 Love and prayers from the USA!

[@davidfromstow]

As always, a great explanation - and it's so easy (afterwards!). Thank you

[@shiraishichan3944]

first time i could solve one of your problems by myself! I like your videos so much and i hope to be better at geometry so i can solve all your problems easily ~love from a 9th grader

[@mcorruptofficial6579]

Hi dear solved by other way, through crossing AD and BD but you method much easier. At last step, consider inner angles of a parallelogram with D and C vertex Thank you bud.

[@PreMath]

Excellent my dear friend Thank you for sharing! Cheers! You are awesome 😀 Love and prayers from the USA!

[@sameerqureshi-kh7cc]

Sir you ARE a math genius! Love from Pakistan 😊👍🌹

[@PreMath]

You are too generous Sameer Thank you for your feedback! Cheers! You are the best 😀 Love and prayers from the USA!

[@shango6164]

Nice problem, liked it. Tks again.

[@PreMath]

Glad to hear that! Thank you for your feedback! Cheers! You are awesome Shango😀

[@fetauAdu]

Sorry, I don't know how to type in the Greek letters. So I am using a, b & d for Alpha, Betha & Delta respectively. The convex angle d (ADB) is 360-109=251 (d=251) As you stated, angles a+b=71 The sum of the interior angles of the quadrilateral ADBC, x+a+b+d (CONVEX angle D)= 360 or x+71+251=360 Thus, x=360-(251+71)= 38

[@PreMath]

Excellent Philip Thank you for sharing! Cheers! You are awesome.😀

[@PreMath]

Excellent Fetaw Thank you for sharing! Cheers! You are awesome.😀

[@davidseed2939]

αβγ etc. available in keyboard settings then Greek

[@philipkudrna5643]

Before watching: 180-109=71 (sum of the other 2 angles). Double the other angles-> 142. Leaves 180-142=38 for angle x.

[@PreMath]

Excellent Philip👍

[@aviratnakumar5847]

Awsome. But as D is the incenter of the given traigle we can directly use the angle subtented at incenter formula. Here angle ADB =90°+(0.5*anglr ACB) Solving further with the given data we get x=38

[@sandanadurair5862]

Good approach

[@PreMath]

Excellent! Cheers! Nice approach You are awesome Aviratna😀

[@zplusacademy5718]

Extremely beautiful sir

[@susennath6035]

Very easy. Nice Carry on

[@PreMath]

Excellent! Cheers! You are awesome Susen😀

[@devondevon3416]

Let angle A = 2p (since A has two congruent angles as shown) Let angle B = 2n (sine B has two congruent angles as shown) Then X + 2p + 2n =180 or X + 2(p+n)=180 but 109 + p + n = 180 Therefore p+n= 71 (180-109) X + 2(71)= 180 X + 142 =180 X = 180-142 X = 38 Answer

[@PreMath]

Well done Thank you for your feedback! Cheers! You are awesome Devon😀

[@kafaichan3371]

Let ang DAB = a, ang DBA = b, a+b+109 = 180 -> a+b = 71, 2(a+b) + x = 180 x = 180-142 = 38 deg

[@PreMath]

Great! Thank you for your feedback! Cheers! You are awesome Chan😀

[@praveenchauhan007.]

As being a student of class 8th I came here every day bcz maths is love... I am learning great everyday from u

[@govindashit6524]

Very simple

[@PreMath]

Great! Cheers! You are awesome Govinda.😀

[@pranavamali05]

Pretty Nice question thanks

[@PreMath]

Welcome Pranav dear Thank you for your feedback! Cheers! You are awesome😀

[@charlesbromberick4247]

Sometimes it seems the prof has more theorems than grains of sand on the beach. This problem is a good example of just getting started makes things easier.

[@PreMath]

Thank you for your feedback! Cheers! You are awesome Charles.😀

[@mauriciosahady]

Também pode considerar o quadrilátero côncavo, de tal forma que 360 - 109 = 251° + 71° = 322, so X = 360 - 322

[@242math]

sure can, thanks for the challenge bro

[@PreMath]

Glad to hear that! Thank you for your feedback! Cheers! You are awesome .😀

[@shreygupta1326]

This was too easy solved in mind within seconds 😁

[@PreMath]

Excellent! Cheers! You are awesome Shrey.😀

[@shreygupta1326]

@@PreMath Thank you so much sir! You are really Great I watch all your Videos they are soo good and mind refreshing and expecting same in the future 😊😁

[@PreMath]

@@shreygupta1326 You are the best! Love and prayers from the USA!

[@MathsOnlineVideos]

I solved it in exactly 38 seconds!

[@PreMath]

Excellent! Cheers! You are awesome Siyanda.😀

[@e1woqf]

38!!! what a coincidence ! 😀

[@truthandreason8394]

109 = a+b+x ; a+b = 180-109 = 71; x = 109-(a+b) = 109-71= 38

[@dhrubajyotidaityari9240]

109+B/2+C/2=x+B+C=180° x=38°

[@PreMath]

Excellent! Cheers! You are awesome .😀

[@mahalakshmiganapathy6455]

Easy sum thank you

[@PreMath]

You are welcome! Excellent! Cheers! You are awesome Mahalakshmi dear😀

[@mustafizrahman2822]

x=38 degrees. I honestly solved it in only 7/8 seconds.

[@nihalverma1554]

great

[@PreMath]

Excellent! Cheers! You are awesome Mustafiz😀

[@devondevon3416]

x appears to =38

[@PreMath]

Excellent

[@phanimaheswara7492]

Thank you sir

[@PreMath]

So nice of you Phani Cheers! You are awesome.😀

[@manualrepair]

👍

[@PreMath]

Thanks! Cheers! You are awesome 😀

[@giuseppemalaguti435]

38....x+2(180-109)=180........x=180-142=38

[@PreMath]

Excellent Giuseppe Thank you for your feedback! Cheers! You are awesome 😀

[@locbui5388]

Wow

[@vt20247]

My head is hurting trying to figure out the triangle CAB is being intersected in half by AD and CBA by BD. How come? Can someone please explain that?

[@PreMath]

Hello dear, these are given conditions in the problem! Thanks for asking.

[@olgakornak3969]

a=b a=35.5° b=35.5°

[@capitalistbabu1154]

38 deg

[@PreMath]

Excellent! Cheers! You are awesome .😀

[@capitalistbabu1154]

@@PreMath no Sir I am an ordinary being..

[@PreMath]

@@capitalistbabu1154 You are the best! Love and prayers from the USA!

[@МихайлоЛобунець-ы8в]

I am in 9th form (ukrainian educational syste), solved it in like 30 secs, my answear was 38, let me see, am i right? Thanks for the video

[@МихайлоЛобунець-ы8в]

Yep, my answear is relevant))

[@JSSTyger]

38 degrees i believe.

[@PreMath]

Excellent! Cheers! You are awesome JSS😀

[@bentels5340]

Nice little problem. Maybe a little too easy...

[@PreMath]

Thank you for your feedback! Cheers! You are awesome Ben.😀

[@kennethkan3252]

180－（180－109）×2＝38

[@PreMath]

Super Thank you for your feedback! Cheers! You are awesome Kenneth😀

[@thomakondaciu6417]

×=38

[@PreMath]

Excellent! Cheers! You are awesome Thoma😀

[@玉皮踊る]

x=360-{(360-109)+(180-109)}=218-180=38

[@mustafizrahman2822]

What do you mean by it? Please explain.🙏

[@PreMath]

Excellent! Cheers! You are awesome😀

[@МаксимКинзибаев]

Человек не может осознать , что сумма углов треугольника 180 градусов. Весь ютуб завалил такими задачами.

[@manojpathak6601]

38

[@PreMath]

Excellent! Cheers! You are awesome Manoj.😀

[@nihalverma1554]

its 38

[@PreMath]

Excellent! Cheers! You are awesome Nihal.😀

[@Teamstudy4595]

Ans : x = 38 degree. Super duper bumper easy question

[@PreMath]

Excellent! Cheers! You are awesome Jayant.😀

[@alexniklas8777]

Х= 38

[@PreMath]

Excellent! Cheers! You are awesome Alex.😀

[@girm558]

solved in 2.12 seconds.

[@PreMath]

Excellent! Cheers! You are awesome Girm.😀