In this triangle theorems instructional activity, students identify the theorem used to prove the specified triangular relationship. Students are shown an illustration of two or more triangles. They identify the postulate that would be...

Teach budding mathematicians how to square a triangle with an interactive that shows a graphical proof of the Pythagorean Theorem. Pupils alter the lengths of the legs using sliders. Using the inputted lengths, the applet displays the...

In this triangle congruence learning exercise, students select the postulate that is being illustrated to prove congruence between triangles. The learning exercise is self-scoring. Once students select the "check your work" link, they...

In this geometry worksheet, students identify the different properties to represent a given statement. They use proof to show how they arrived at their answer. There are 5 questions with an answer key.