In a coordinate proof, geometric statements using algebra and the coordinate plane.

Students use hand geometry to prove their own identification.

[Free Registration/Login may be required to access all resource tools.] Apply the Pythagorean Theorem and its converse. Includes videos, exercises, links to interactive activities, etc.

This site is for the purpose of using proofs for geometry. It helps by giving some useful theorems.

This site describes the role of computer involvement in the four color map theorem.

This tutorial discusses triangle inequality and provides practice problems for students to try out their skills. The teacher resource page contains a lesson plan for a yummy activity involving licorice.

Students are given a conitional statement and are to determine which choice is the converse of the statement.