Proof: Parallel lines divide triangle sides proportionally | Similarity | Geometry | Khan Academy

Prove that a line parallel to one triangle side divides other sides proportionately.
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[@letyourlightshine7131]

My eyes can prove it. That's not enough? Just kidding. Love your videos.

[@amiramnoamdoron]

But similar triangles are proportional by A.A because of??

[@PDeRop]

My son in seeing this, in the context of "Thales Theorem".. How does this, relate to Thales?

[@IdOnThAvEaUsE69]

Thales is the one who proposed this theorem. Like how Pythagoras proposed the Pythagorean Theorem.

[@marscommander7303]

Thk u

[@MathemaTeach]

I love proving 💙 great video

[@siddhakanthi5963]

Sal you have changed who I am with math

[@Cancer-_-39292]

Yay

[@snhshafsfjzhsvs8608]

Love the vids!

[@harrynicesongji3887]

Samj aata to jyada mja aata😛

[@danielsalumu2654]

Thanks man now i understand better.

[@unkwn.9420]

Can we use this method in CBSE board exam ?

[@asmi023]

Kal paper hai na

[@komalkriti9918]

@unkwn.9420 did you get your answer?

[@somyjijo9615]

❤thx sir

[@jackfann8358]

If all you know is that AD is Equal it DB and AE is equal to EC then how do you figure out if ED is parallel to CB

[@Kerenr88]

that is a given in the problem... It's telling you they are parallel... if that fact was not confirmed you would not be able to move any further with the problem as you wouldn't know that the angles are equal...

[@deepeshsingh2308]

My first view 😍😍😍
I love this ❤️
Thank you sir for all this

[@user-pm5ic3kr3s]

Sir plsss

[@sunhochoe461]

*a*

[@TXJianli]

This video is misleading. Similar triangle theorum is not supposed to be used here.

[@ishworishatech7359]

What are the pair of parellel lines in this figure

[@gabehern.219]

Lines ED and CB

[@bruh_660]

the base of triangle and the other line which is drawn

[@animikhaduttadhar2284]

Great video!

[@user-pm5ic3kr3s]

Sal sir esponse me

[@sunhochoe461]

**a**

[@aaaaaaa1]

EeeZee

[@sunhochoe461]

*helloeoeoeooe*