Warm Up Solve each of the following proportions. Describe the method you used. 1) 2) 3) 4) 10 minutes . End

Answers Solve each of the following proportions. Describe the method you used. 1) 2) 3) 4) 4.2 15 6 12.5 .

Similarity

Yes/No Game 1Y 2N 3N 4Y 5N 6N 7Y 8Y 9Y 10N 11Y 12N 13Y 14Y 15N 16N

Cut Out Activity Resource Manager: Obtain a Cut Out worksheet, Resource page, ruler, protractor, and scissors for each member. Time Keeper: Set your timer for 15 minutes Reader/Recorder: Read each part out loud Spy Monitor: Ask other tables or teacher if you’re stuck!

Similarity Definition: Similar polygons are polygons having corresponding angles congruent and corresponding sides proportional. You denote similarity by ~

Example Are the following shapes similar? A D 20 16 5 4 E 3 F C 12 B

Example The following shapes are similar. Find the scale factor. Solve for x. Write a similarity statement M 21 S N 2 x-1 L T R 15 18 5 O P V U 8

Assessment Homework