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ACT Math: Plane Geometry Drill 4, Problem 1. What is the radius of the sphere?

ACT Math: Plane Geometry Drill 4, Problem 5. What is the height of the prism?

ACT Math: Plane Geometry Drill 5, Problem 5. How much material do you need to cover the entire tent?

Sure, Romeo and Juliet were a great pair, but they don't hold a candle to linear pairs. Find out more by clicking play.

Don't try this at home, Shmoopers.

We inscribed some angles on the walls of our office, but our boss got mad, so we made this video instead.

Los cubos de hielo no son ruidosos generalmente...pero tienen un volumen de tipo diferente. Este video te enseñará cómo encontrar el volumen de...

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

Okay, so you know the length and width of your cutting board, but how do you find the area? Watch the video and find out. Then you can brag to all...

This video can run circles around other videos about circles. Sir Cumference, of Round Table fame, explains all the properties of… well, circles....

Time to learn about the area of a sector. And no, that's not the sector's bedroom with a bumper sticker on the door that reads, "GO AWAY."

Equations of circles are a no-brainer. If aliens can do it, so can you. All you do is substitute the center of the circle's coordinates into the eq...

No hard hat needed here–we're talking about mathematical constructions. If you're using a straight edge, a compass, and a pencil, you're working...

ACT Math: Plane Geometry Drill 5, Problem 3. What is the measure of Angle GHJ?

To prove lines are parallel, you need a third line. We at Shmoop (and the rest of the world) call it a transversal.

Who knew triangles had midsegments? We did.

Talk about math being applicable to real life.

ACT Math: Coordinate Geometry Drill 2, Problem 2. Which expression is depicted by the number line?

If you already know what a conditional statement is, then you're smarter than you look. And boy do you look smart.

CAHSEE Math Mathematical Reasoning: Drill 2, Problem 5. Which of the following conclusions can be drawn based on the above information?

Mathematical Reasoning Drill 5, Problem 1. Which of the following could be the number of pieces the lasagna was cut into?

To prove lines are parallel, you need a third line. We at Shmoop (and the rest of the world) call it a transversal.

A sequel to the 1989 classic Segments, Lines, and Videotape, this video will change the way you think about lines, segments, and rays. Unless yo...

SAT Math 5.2 Geometry and Measurement

Curious to find out what angle these guys are playing? Check out this video. You’ll have angles coming out of the wazoo.

We know what you came here for—you want to hear the latest interview with the hot starlet, Polly Gon. Well, we've got the scoop for you. She's re...

SAT Math 4.3 Geometry and Measurement

Rectangles just love to have perimeters. And we just love to measure them.

CAHSEE Math: Mathematical Reasoning Drill 3, Problem 4. Which of the expressions gives the best estimate as to the length of this quadrilateral's p...

SAT Math 6.4 Geometry and Measurement

Mosquitos need their caffeine, just like the rest of us. Wouldn't think zipping around and stinging people all day long sap your energy?

It's the sine! No, it's the tangent! No, it's the cosine! Alright, so maybe evaluating trigonometric functions isn't as exciting as spotting Superm...

ACT Math Trigonometry Drill 1, Problem 2. Can you find the tangent?

SAT Math 11.2 Geometry and Measurement

Bien, tú no eres el único que cae completamente en el aburrimiento por un rato. Dos figuras geométricas dimensionales también. ¿Cómo ellos pu...

If you were looking for the trailer for the new Michael Bay movie, you've got the wrong number. Transformations are rotations, reflections, and tra...

This video covers the different types of triangle. What makes a triangle isosceles, scalene, or equilateral? What about the different kinds of angl...

Sine is the opposite over the hypotenuse; cosine is the adjacent over the hypotenuse; and tangent is the opposite side over the adjacent side....

You might not think that the properties of a triangle would be particularly helpful in the realm of Tootsie Pop lickology. But boy, would you be wr...

We’ve got a problem. Actually, we’ve got a ton of them. Fortunately, they’re only geometric word problems, which really aren’t so bad. Weâ€...

How do you figure out how long you have before the Galapagos Zombie Tortoises eat you? By using math, of course. If you can't solve this problem, w...

Simple steps to solving geometry word problems. If only the problems themselves were this simple...