Angles of parallel lines 2 | Angles and intersecting lines | Geometry | Khan Academy

Angles of parallel lines examples

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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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[anasshahid]

I used to hate maths but youre videos make it easy to understand!!! Thank you!!!!

[silverfeathered]

I'm glad he used those arbitrary numbers. Regardless of the visual representation provided to you on any test or example, the information GIVEN is the information you go by. If said angle is a given 60°, then that's just what it is. If the pictures in a book are your primary focus, then maybe you should go back to picture books.

[abhinav_raju]

The angle you called "60 degrees" is not true, because it is an obtuse angle.

[crazyu]

@CrashOrgasm
Buddy ur point is somewhat correct but not Don't be a blind sheep, try n understand the concept (meaning) of the topic (properties of parallel lines).... Mr. Khan is doing remarkable job.

Just get mature a little bit before pointing

[ayoifestella]

Don't be stupid. They are not to scale.

[soccerify]

@CrashOrgasm it doesnt mater what it looks like, the principle is still the same

[shazaduh]

nice vid, but I donno your angle of 60 degree in the first example does not look like 60 degree but looks more than 90 degree.

[TessHKM]

They're not drawn to scale.
Same thing happens on every test you'll see.

[altafhussain]

You are making mostakes while explaining...correct yourself firs

[CrashOrgasm]

@biostealth he says the first angle is 60° Since when is 60° more than 90° ?

He has his numbers the wrong way. It's simple, If you get your nose out of is bum you can see.

[CrashOrgasm]

WRONG WRONG WRONG
Your blue mark as 60 deg is more like 120
your 120 marked with pink x? more like 60.

Love what you have been doing with the academy but found lots of faults (even with the basic sfuff like this)