Angles of Triangle: Sum of Interior Angles and Exterior Angle Theorem by  

... Good day to you, Regarding the " Exterior Angle Theorem " it would be beneficial for beginning students to give a bit more explanation for a thorough understanding, because my experience with for instance tutoring students they will not remember the theorem without a clear understanding, so what I would do is to also first show the relationship between the exterior angle X and the interior angles ( T deg. , 88 deg. , 39 deg. ) of the triangle as follows ... [ assume unknown angle T ] .... 180 deg. - X deg. = T deg. = 180 deg. - (88 deg. + 39 deg.) ... - X deg. = - (88 deg. + 39 deg.) ... X deg. = 88 deg. + 39 deg. = 127 deg. ... now students can see for themselves that this theorem didn't randomly fall out of the sky! I personally don't like to learn theorems, but rather understand them! Thanks for your math efforts ... best regards, Jan-W

Great lecture on Angles 😊

Example of a good teacher

Anyone in 2024 September

wonderful..explanation is so simple and easy to follow. Thank you so much🙏🙏

Very well explained thanks!!!!

thank you so much, sir! this was very helpful and i understood very quickly. very helpful for my test tomorrow ;)

thanks dawg, highly appreciate it

Very useful explanation, keep it up sir

Good job 😮❤

Dawgs, just directly add the 88 and 39(interior angles)= 127(exterior angle) *Only when the X is on the line* Instead of then subtracting it with 180 then again after getting the answer 53, again subtracting it from 180. It will eat the time especially if you're giving SAT or ACT

Good job thanks sir😊❤👏👏👏

your solution in triangle number 3 is wrong = x + y = 180, let y is our third interior angle; y + 88 + 39 = 180 = y=53, therefore; x + 53 = 180; x = 127..THE SUM OF TWO INTERIOR ANGLES (88 & 39" CANNOT BE ADDED WITH AN EXTERIOR ANGLE X DIRECTLY.

Superb

Wow...grate teaching ...

Perfect lecture👍👍👍👍👍👍👍

Tank you Mr😊

Great video i never thought I'll get this right one day...🙏🏾🤜🤛

Wow good example

Thank you so much now i now how to calculate angles of triangles 🔺️

Thank you Sir

Whenever I worked out the missing number for each angle, what I did was I added up the sum of each triangle using my calculators and then subtracting the given number from 180° to figure out the missing number

Thank you sir really appreciated 🙏 👍 👏

thank you so much this was very helpful

I love your work❤❤❤❤❤❤

Thank you for helping me so much 💕💕

Thanks ❤️❤️❤️❤️

Perfect example ❤❤

good job

thanks you so much my concept was cleared in 5 minutes 😃😃

You are the best teacher please explain about angels and lines and transversals please do it today if you can

thanks so much go math

Salmat, sir. Nakapasar na gyud ko♥️

Good

Exam is near Nothing is clear No need to fear Sir is here🎉🎉🎉

On C,angle B is simply 53°✓ and the exterior is 127°✓.But I still agree with you❤

Anyone in October 2024😢

Afternoon sir i have a problem with understanding the exterior angel X+88⁰+39⁰=180⁰ X+127⁰=180⁰ X 180⁰-127⁰ X=53⁰

thank you po dito

Why u do short cut on number2??😢

Missing triangle

Great letcher of angles I'm so bad at them at school 😂

formula: x + y + z = 180 then just follow the method for solving the missing variable as trained mathematics is just pure common sense IMO

Calculate the size

What is the sum of exterior angles (definition)

Why are not writing reason?

Thank you Sir i can finally complete the assignment my teacher gave me

The 3rd one Is wrong your meant to take the 127 away from 180

I don’t think this lesson is for jss1😢

Sir is left handed

😻😻😻😻😻😻😻🤩🤩🤝❤❤

Bro come from Philippines

On the day of my exam OCTOBER 1💀

I am here

*Signs someone is faking their intelligence,not genuine*.Psych2Go❤

at what grade po ito tinuturo ?

Me

3th is wrong

So not diggre my Angeles

I really understand your teaching very well sell your accout I want to send you money

Missing triangle