Curated OER
Tile Patterns II: Hexagons
After learning that the sum of interior angles for triangles is 108 degrees, take it further to show that the sum of angles in any polygon is the same! Using hexagons, pupils practice finding the measure of the six congruent angles. Make...
Khan Academy
Khan Academy: Use Similar & Congruent Triangles
Solve geometry problems with various polygons by using all you know about similarity and congruence.
Khan Academy
Khan Academy: Similarity and Transformations
Given two polygons, try to map one onto the other using angle-preserving transformations, and determine whether they are similar. Transformations are done in "intuitive mode." Students receive immediate feedback and have the opportunity...
McGraw Hill
Mc Graw Hill: Glencoe: Self Check Quizzes: Congruent and Similar Figures
Use Glencoe's randomly generated self-checking quiz to test your knowledge of congruent and similar figures. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...