Right Triangles

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A helpful scientific calculator that runs in your web browser window.

Practice using Pythagorean Theorem to solve for the third side of a right triangle. Answers included.

All about triangles.

A page with links for properties of circles and different types of polygons. Each link has great visuals with clear markings, definitions, and formulas.

Definition and picture of a 3:4:5 triangle. Gives other examples of pythagorean triplets.

Definition of a 45-45-90 triangle and the ratio of its sides. Includes a great picture.

Definition of a 30-60-90 triangle along with the ratio of its sides.

Calculate the perimeter and area for each triangle. Answers included.

The worksheets below can be used as part of extra math homework. These geometry worksheets are free and easily printable. They cover typical school work from grade 4 through 8. They include questions on polygons, 3D objects, angles, and calculations of area, volume, etc.

In this Early Edge video lesson, you'll learn more about Triangles, so you can be successful when you take on high-school Math & Geometry.