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Ah, the Pythagorean Theorem. Pythagoras’ masterpiece. All his other theorems pale in comparison to this one.

So what's our angle? We want to help you learn about angles. Really—that's it. Shmoop has distilled our angle knowledge into a short video that w...

Not to be confused with complimentary angles, which are just the nicest angles you'll ever meet.

Unlike anything that enters the Bermuda Triangle, Exterior angles can be found—in more than one way. This video covers how to use the remote inte...

Good thing surface areas are as easy as they seem on the surface.

Haven't you always wondered how much cardboard it takes to encase a trunk warmer for your pet elephant?

It's one thing when all those shapes are sitting flat on the page. But when they start popping out and invading our personal space bubble, we get a...

ACT Math: Plane Geometry Drill 1, Problem 5. If two polygons have the same shape and size, they are what?

GED Math 4.5 Measurement. What is the longest clothesline Isaac could possibly hang in his backyard?

SAT Math 2.3 Geometry and Measurement. Find the length of AB.

SAT Math 3.4 Geometry and Measurement

SAT Math 3.2 Geometry and Measurement

SAT Math 6.4 Geometry and Measurement

SAT Math 8.2 Geometry and Measurement

SAT Math 8.3 Geometry and Measurement

We love scribbling as much as the next person, so we decided to scribble together about lines! Enjoy!