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GED Math 5.4 Measurement. What is the volume of a sphere that measures 18 meters across?

GED Math 2.1 Measurement. How tall is the water tank?

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

FYI: cats don't like to get wet. Okay, so that fact won't be relevant every time you solve trig equations, but it happens to be this time.

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

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...

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

Volume is crucial to our lives. It determines the amount of food we eat, the amount of fluid we drink, and hydraulics, just to to name a few. One o...

SAT Math 1.5 Geometry and Measurement. How many jars of paint will Sierra need?

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."

It's super useful to be able to find the distance around stuff. Like when you’re being pursued by authorities while running around the base of an...

ACT Math: Plane Geometry Drill 5, Problem 4. What is the radius and coordinate center of the circle?

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

SAT Math 5.2 Geometry and Measurement

SAT Math 8.2 Geometry and Measurement

Who knew triangles had midsegments? We did.

In geometry, points are called collinear if they all lie on the same line. What, no bunk beds?

Talk about math being applicable to real life.

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

Sounds logical to us!

Indirect proofs (or proofs by contradiction) prove their conclusion by showing that the opposite cannot be true. You can use this in math and in ar...

This video explores parallel lines and transversals: how to identify them both on a math test and in real life urban planning. What do the consecut...

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

SAT Math 2.1 Geometry and Measurement. What is the measure of angle z in terms of x and y?

SAT Math 4.3 Geometry and Measurement

“Polygon” - it’s not just something we say when our pet parrot escapes through the kitchen window. Curious to find out what angle these guys...

ACT Math: Plane Geometry Drill 2, Problem 1. What is the perimeter of the shape shown?

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

SAT Math 4.1 Geometry and Measurement

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...

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

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

Shmoop saw the sine. Want to pull an Oliver Twist and ask us for more? We've gotcha covered. Head over to /video/math/ for more mathy goodness. No...

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...

Translations: now without the trans fat. Functions: now without the…fun? Wait, scratch that. Now with extra fun! Don’t believe us? There's only...

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

Someday you might be a big, fancy defense lawyer, and you'll have to prove that your client's triangle was congruent to the triangle in question. W...

ACT Math: Plane Geometry Drill 4, Problem 2. If x, y, and z are all integer values, which of the following cannot be the ratio of x:y:z?

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. We�...

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...