Angles formed by parallel lines and transversals | Geometry | Khan Academy

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Parallel lines, transversal lines, corresponding angles
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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.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
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you taught somethig to me in like a few minutes that my math teacher took 20 lessons to explain

[@MangoRageYT]

ballistic_daksh lmfao

[@crappersage1285]

My math teacher linked this video to me. So would it be my math teacher teaching me, or this guy on this video?

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Lol

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it’s 11:28 pm i’m about to fall asleep and this video is my savior

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@Evelyn Hernandez same

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11:15 🤣

[@heart755]

SAME

[@zaafirahmad1853]

This is almost like cheating cause it's so easy to follow him in this video! Helps a lot for Grade 8 math.

[@elvinnavaperez5026]

Zaafir Ahmad lol

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im doing this in grade 8

[@ballistic_daksh1917]

Zaafir Ahmad im doin dis in grade 7

[@exestudios2343]

hows grade 11 zaafir??

[@zaafirahmad1853]

not bad, looking back at this comment makes me cringe hard haha

[@candykatkittylichiousisthebomb]

extra help: it all equals up to 180 degrees. so like 180-a = b

[@jacobgeorge8085]

candy-kat! kitty-lichious! Linear pair right

[@rotomdexcpufan]

I graduated years ago, and recently realized just how much I miss looking at a Jumble of Shapes and proving that 2 triangles in it are the same or whatever (something something the comfort of finding order in chaos). But I pretty much forgot everything and didn't know where to start (and can't afford to pay for a course). My friend recommended Khan Academy and I cannot understate how perfect a recommendation that was! Your explanations are so clear, your use of color is helpful and almost festive, and even your tone is friendly, like you genuinely want everyone watching to succeed and believe that they can. And you're right- under all the years of rust from disuse, I finally feel my brain stirring as your explanations click neatly into place. I hope you know how kind and how important your work is!

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No mine

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Bieng honest yup

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Pls

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I’m the 100th like on your comment!!

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no MY TEACHER

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this academy is great it helps me soo much with all the work I'm doing right now in Geometry Thank God for The Khan Academy!!!!!!

[@koven7043]

4:11 now I'm not gonna actually write proof, just say everything is "intuitively obvious" XD

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I had to do this in 8th grade

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in a 45min class i couldnt learn ONE thing from my math teacher and this time i WAS ACTUALLY PAYING ATTENTION !! (theres a first time for everything) but when i watch a 7min video i feel like a GENIUS

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urghhhh watching this video because of geometry homework

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Jaedo Oh oh my god same

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Jaedo Oh me too

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same

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same just 5 years after u

[@fallenthunderyt1311]

Same

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You are better then any math teacher all math teachers is not good

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In Ethiopia you learn this in grade 6 this chapter was so difficult for me .thanks you helped me a lot. I wish you were my teacher

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in pakistan we learn this in grade 6 too

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Then how am I learning this is in america at 6th grade!?

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I dunno but i hate it
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11 years later and he still explaining to millions

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How come the only good teachers are online

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i never pay attention in class and just watch khan academy before the test lol thanks a lot-it's very helpful

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s4r

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i missed a whole week of my accelerated math and this really help me catch up

[@martinferrari2110]

4:10, this is proven by using Euclides postulate 5 (parallel lines). Interior angles add up to 180 degrees if the lines are parallel, and the exterior angle plus the adjacent interior angle add up to 180 degrees also.

[@dagentleman4769]

What is the difference between transversal lines and transversal angles? Or are they the same meaning?

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You explained something I couldn't understand for a year

[@nhlanhlahlatshwayo9809]

Online learning is the best, teachers only depress us

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True a lot of my teachers were rude but all my online teachers were really nice 😭

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I wish all school math teachers were from Khan academy

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I watch this video cuse the teacher is putting it in our daily revision for new or old.......things that we will learn......

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once again!!! thank you khan academy.

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i love your simplicity

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You searched this up or got it for homework

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Yeah.

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No

[@rub97EW]

He writes perfectly with a mouse :O

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rub97EW ikr

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he uses a wacom tablet

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He’s using a pen and tablet not a computer and mouse.

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The way you say E is soothing asf

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quick,straight to the point.

[@autumnraingiordano3017]

This sort of helped me understand it better. But I am horrible at math so nothing can make me better

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Thanks man this really helps a lot certainly better than getting a tutor

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You're a great teacher

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when my teacher tried to teach me this i understood nothing after watching your video i got the highest mark in my class

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10th grader here got skipped up back in 2021 and didn't get to experience 8th most of 6th and barely 7th this helps thank you

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Thanks mate. This video helped so much for my gsce math mock exam.

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I've always hated maths in school. I just started learning in now when I'm 31 years old. It now makes sense. It was hard to learn maths in language that is not venec as a child

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I never understand this guy he sounds like a fish

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I Like How You Explain It I Understand How To Do It Now

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Oh I WIsh I could Type Like THAt

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shut up

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you are using bad language

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Mine was terrible

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Who is also from heritage school?!

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Thank you Rashid Khan

[@dr.ashishranjan9989]

Good explanation

[@xjustsaiyan7x563]

this was no help what so ever i still don’t understand it

[@xjustsaiyan7x563]

@Lyric Yeager i had my teacher help me and now the video helps out to it was just not knowing that caused it to be like that then once my teacher showed a example the video helps just never edited the comments

[@autumnraingiordano3017]

This did help me though. So thx:)

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Just warming up for exams

[@autumnraingiordano3017]

I am so confused! I got into the advanced algebra class and I can't follow what is happening at all!!!😖😖😿

[@uncircumcised3504]

What grade are you in?

[@uncircumcised3504]

What grade are you in?

[@idk-hg2hs]

Bro just taught me something that took like 30 hours of studying in like one second 😂😂😂😂

[@xanderyates1295]

what app r u using for the drawing thing

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where yall do this attttttttttttt

[@dynasty5074]

How can you prove same-side exteriors ?

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Bruh I didn’t even know that was a thing😭

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lmao

[@heart755]

@@Han-xx1jf XD

[@neersheth5197]

Love your Videos!

[@rishikeshkanchi0924]

I love tranversal concept

[@olamasri6783]

Amazing

[@ic3144]

Thank you so muchhh

[@benjamindiblanda787]

Helps me alot getting through with my GED such a cheat lol

[@avishkarmandlik7477]

4:10 we can prove that with test of similarities of triangles

[@shantaahmed4184]

What is the relation between h and b ?

[@jahshshdhdgsh4686]

God is good

[@purpleheart8957]

I am not I grade 8 I just like learning higher than my grade XD but thanks so much I finnaly get it

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AmiTV I'm in grade 7 and this is our lesson 😂

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Kim Bok Joo same here

[@justinexavier5170]

Kim Bok Joo me too

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sameeee

[@alishamahiyamahak1995]

I got half of it but in the end of the video it got I complicated but Franck anyway😃

[@exestudios2343]

you are a legend

[@himanshujain3650]

thanks :)

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Hello Shakur

[@ryanshepherd6078]

i have to watch like everyday in class

[@shikhahaider5507]

can you please say the place you draw

[@mashaeltalal216]

What grade are y’all in. I’m grade 9

[@beetroot6591]

same

[@mashaeltalal216]

BEETROOT dang that was two years ago, now im a senior

[@LFC-Fan-66]

What application are u using please tell

[@CISVDetroitVillage]

What you say at 4:10 is false...there is a proof that alternate interior angles when parallel lines are intersected by a transversal, which is then used to prove corresponding angles congruent.

[@taliagoldstein1018]

Ok ok woah this was too much for my brain to handle

[@surya_anand]

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[@bloobied4231]

Trying to reach that word count on an essay

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My notes are like another language. 🤦‍♀️

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could u do some physics mechanics videos like momentum and resultant force and stuff

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be me teacher plzzzzzzz...

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bro

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this comment is too good

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such a great comment

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WOAHHHH, YANKEE WITH NO BRIMM

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Woah moment

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stop arguing, u two

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How the hell am I supposed to make a definition for this

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hi

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thx bro

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👍

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I was this close to cheating, but this was my last resort and it worked.

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When i make a comment and it gets 10 likes. Omg look mom. When i look at my comment now. °°

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Fact that I'm watching this video after 10 years

[@fzshadan]

I’m in year 6 and I have no clue

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wow. so many trolls. this is just sad. coming on to a math tutorial and tossing around cuss words wont help you or any body. get a life

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It's because they're all cringy minecraft gamers, and in second grade. Older/more mature individuals like myself appreciate Khan Academy for how they help us.

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No clue

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Why with no intro?
Let me help you say hey guys it's comedy short gamer oh.. Sorry

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Lord Salad lol

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My math teacher told us to watch angle vids :3

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I smell butter

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Rex same.