Proof: Diagonals of a parallelogram bisect each other | Quadrilaterals | Geometry | Khan Academy

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Proving that a quadrilateral is a parallelogram if and only if its diagonals bisect each other
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Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.
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[@astroKidLo]

For anyone confused, at 1:20 he meant

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I look at my face in ipad rather than studying while wathing this video cause the background is black and i cann see my face cleraly 😂

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Same! AHHAHAHA

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Lol

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Me too 🤣

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😂😂

[@ofir952]

At 1:22, does the expression "∠DEC ≅ ∠BAE" wrong? Did he mean "∠DCE ≅ ∠BAE"?

[@Siddharth_Tanwar]

Yes you are right

[@Zuwwar]

That's right

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Yes

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yh

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Bro very nice style of teaching

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9 years later and still my go to guy.Well done champs.

[@harshitpatel4143]

Corresponding part of congruent triangle ....we use if as cpct.....

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This has helped my geometry gradesss

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Wow ! Khan .....
Khan's are growing !

[@QUITEthegamer]

Thanks. This really helped me.

[@cassiopeia6828]

i think you meant

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[@karimhassan5912]

Lmao "cingrewgency"

[@rhoadess]

@Nekit1234007 In the video, we can see he meant ∠DCE ≅ ∠BAE, but it's good to point out the error.

[@mkmopgaming8101]

Great....

[@bbbfizzy4175]

hey isn't it DEC and BAE not DCE and BAE

[@declan3115]

Thank you, my teacher can't teach. ;-;

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Thank you Sir❤❤❤

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thank you sooooo much

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what is he doing now

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what are you doing now? 4 years ago that’s crazy

[@sarahnacional7758]

hmmm triangle should have 3 vertex 2:32 that's vertical angle

[@dinossaurisfinethankyou5229]

Finally, theres a Diagonal of a parallelogram bisect each other that finding Angles not Linears...

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i would never think i would find a dinonara on a khan academy video

[@dinossaurisfinethankyou5229]

@@generousss owemji 😭, so that dino will have an engineer 🙌🏻🤍

[@Nekit1234007]

“∠DEC ≅ ∠BAE” - false

[@dhruvsinghmalik0108]

it is angle DCE congruent to angle BAE

[@nikjohn1997]

hey man ur awesome but i cant find perimeter and area of pane figures can u plz send me da video link plzzz

[@sanjuverma1655]

Do the diagonals of parallelogram bisect each angle at vertex?? Please somene clear this ....🙏🙏🙏please yaaron .... Kardo madad

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It would help my daughter 8n her exams

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stop being so imature. It's an educational video

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😅😅

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I'm here because of my modules thx for your help

[@paulm9523]

My teacher would mark u wrong u named the tri wrong
Sry khan

[@Megaheropap]

They bisect each other but aren’t angle bisector right?

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+Aaron Law What did you do? That's cool!

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awesome but hard still awesome

[@DrakeAzur17]

boring

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Drake Whyte stop being such an immature baby. Its not our fault you're not passionate about being educated.

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@@lubnanadeem3755 agreed. If Khan Academy is boring. Then he's better off at mcDonalds

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I can't understand plzz try to say in hindi

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bruh how are you typing in English then??

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there's a khan academy hindi version; he wont use hindi over here. the whole world studies on this main channel

[@joysemenya6025]

Thank you, this really helped me out.