ShmoopTube

This video explains the vertical angle theorem. Learn about supplementary angles, adjacent angles, and linear pairs, plus bungee jumping. Intersect...

ACT Math: Plane Geometry Drill 1, Problem 2. In the following diagram, what does Angle 2 measure?

You have to feel bad for goats whose horns are in the shape of polygons. You just know they got ridiculed for it back at Goat High. Kids can be so...

This video is sort of a PSA for SAS, ASA, and AAS. This stuff might show up on the ACT, so watch it ASAP.

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...