Log In

My Passes

Sign Up
Learning Guides
Teacher Resources
Test Prep
College Readiness
Schools & Districts
All of Shmoop
Literature
Bible
Poetry
Shakespeare
Mythology
Bestsellers
Dr. Seuss
PreAlgebra
Algebra
Algebra II
Geometry
Biology
US History
Flashcards
DMV
Careers
SAT
ACT
AP Exams
En Español
Essay Lab
Videos
Literary Critics
Shmoop Shtuff
Cite This Page
To Go
Right Triangles and Trigonometry
Home
Geometry
Right Triangles and Trigonometry
Exercises
Intro
Topics
Examples
Exercises
Terms
Best of the Web
Quizzes
Handouts
Table of Contents
ADVERTISEMENT
Topics Exercises
Geometric Mean
To find altitudes of unruly triangles, we can just use the geometric mean, which actually isn't mean at all. It's quite nice. Just multiply two numbers together and take the square root. The...
The Pythagorean Theorem
Sure, we could cut triangles in two until the cows come home, but there's an even simpler way to calculate the sides of a right triangle.Mr. Pythagoras has once again come back to haunt us, doing w...
Special Right Triangles
Right triangles are special by themselves, but there are two magical types of right triangles that we think deserve mentioning: 454590 triangles and 306090 triangles. No, those aren't th...
Trigonometry
We've learned about the Pythagorean theorem, the geometric mean, and magical right triangles that would give Harry Potter a run for his money. In this chapter, we've finally reached the center of t...
Law of Sines
The Law of Sines can be used to find the angles and side lengths of triangles that aren't right triangles. It has little to do with crop circles, aliens, or Mel Gibson.The triangle above rep...
Law of Cosines
The Law of Sines can be very useful, but there are cases where it won't do. Don't get us wrong. It's taken us this far and we owe it some gratitude. But no man is an island and the Law of Si...
Need help with College?