1. Similarity and Congruence Visual Identification Irma Crespo 2010

2. Designs

3. Congruent Shapes Same shape Same size

4. More Congruent Shapes Same shape Same size

5. Similar Shapes Same shape Different size

6. More Similar Shapes Same shape Different size

7. Which is false? A) Congruent shapes are identical. B) Angles in similar shapes are always the same. C) Similar shapes are always the same size. D) Angles in congruent shapes are always the same.

8. Similar shapes are resized versions of the original shape. Congruent shapes are exactly the same shape and size. So, all pairs of (congruent, similar) shapes are (congruent, similar).

9. Squares Which of the following is true? A) All squares are congruent. B) All squares are similar. C) Some pairs of squares are neither congruent nor similar.

10. Triangles Which of the following is true? A) All triangles are congruent. B) All triangles are similar. C) Some pairs of triangles are neither congruent nor similar.

11. Circles Which of the following is true? A) All circles are congruent. B) All circles are similar. C) Some pairs of circles are neither congruent nor similar.

12. Similar or Congruent Your Game

13. Similar or Congruent

30. Summary Congruent shapes are identical. They have exactly the same shape and size. Similar shapes have the same shape and can have different sizes. Congruent shapes are similar. Similar shapes are not congruent.

31. Practice Worksheet Answer the 8 multiple choice questions. For the 9 th question, think about ways to mathematically determine if shapes are similar or congruent for the next lesson.

32. Main Resources http://www.absorblearning.com/mathematics/de mo/units PowerPoint created by Irma Crespo. University of Michigan-Dearborn, School of Education. Winter 2010.