9/16 * Write only the Big Question In your journals and then hang tight… DJ for the Day Victoria… showed Responsibility because she finished ALLLLLLLL of her work even though it got a little distracting at her table Poetry Basket Zahra (+12) Trinity (+4) In general, how can you decide if two shapes are similar?

…there sizes are similar and the shapes and angles are about the same size. Lexi …are similar because of their angles… the one on 3 was different and the side lengths on the other one were different. Victoria..are similar because they have the same angles… Tasha You just times the x and y, but the rule stays the same. Zahra..because the side lengths are similar which makes them look alike… Liliea..because of the resemblances in the shapes and angles of the shapes as well as the same angles in each shape.… Jake

Two shapes are similar if: The corresponding angles are the same size The corresponding sides have the same scale factor Two shapes are similar if: The corresponding angles are the same size The corresponding sides have the same scale factor In general, how can you decide if two shapes are similar?

A. After studying the noses and mouths in the diagram, Marta and Zack agree that rectangles J and L are similar. However, Marta says the scale factor is 2, while Zack says it is 0.5. Is either of them correct? How would you describe the scale factor so there is no confusion? B. Decide which pairs of rectangles are similar and find the scale factor. C. Decide which pairs of triangles are similar and find the scale factor. D. 1. Can you use the scale factors you found in Question B to predict the relationship between the perimeters for each pair of similar rectangles? Explain. 2. Can you use the scale factors in Question B to predict the relationship between the areas for each pair of similar rectangles? Explain. E. For parts (1)–(3), draw the figures on graph paper. 1. Draw a rectangle that is similar to rectangle J, but is larger than any rectangle shown in the diagram. What is the scale factor from rectangle J to your rectangle? 2. Draw a triangle that is not similar to any triangle shown in the diagram. 3. Draw a rectangle that is not similar to any rectangle shown in the diagram. F. Explainhowtofindthescalefactorfromafiguretoasimilarfigure.

A. After studying the noses and mouths in the diagram, Marta and Zack agree that rectangles J and L are similar. However, Marta says the scale factor is 2, while Zack says it is 0.5. Is either of them correct? How would you describe the scale factor so there is no confusion?. 9/16 * In your journals…

B. Decide which pairs of rectangles are similar and find the scale factor. C. Decide which pairs of triangles are similar and find the scale factor. 9/16 * In your journals…

E. For parts (1)–(3), draw the figures on graph paper. 1. Draw a rectangle that is similar to rectangle J, but is larger than any rectangle shown in the diagram. What is the scale factor from rectangle J to your rectangle? 2. Draw a triangle that is not similar to any triangle shown in the diagram. 3. Draw a rectangle that is not similar to any rectangle shown in the diagram.

F. Explain how to find the scale factor from a figure to a similar figure. 9/16 * In your journals…