Main content

# High school geometry

Not feeling ready for this? Check out Get ready for Geometry.

Pythagorean theorem: Right triangles & trigonometryPythagorean theorem proofs: Right triangles & trigonometrySpecial right triangles: Right triangles & trigonometryRatios in right triangles: Right triangles & trigonometry

Introduction to the trigonometric ratios: Right triangles & trigonometrySolving for a side in a right triangle using the trigonometric ratios: Right triangles & trigonometrySolving for an angle in a right triangle using the trigonometric ratios: Right triangles & trigonometrySine & cosine of complementary angles: Right triangles & trigonometryModeling with right triangles: Right triangles & trigonometry

Test your knowledge of the skills in this course. Have a test coming up? The Course challenge can help you understand what you need to review.