✓ Lesson Check

Do you know HOW?

J D R T ∼ W H Y X . j d r t tilde operator w h y x .  Complete each statement.

1. ∠ D ≅ _ ? _ angle , d approximately equal to . modified under bar with
2. R T Y X = □ W X fraction r t , over y x end fraction . equals , fraction white square , over w x end fraction

3. Are the polygons similar? If they are, write a similarity statement and give the scale factor.

   
   Image Long Description
4. △ F G H ∼ △ M N P . white up pointing triangle f g h , tilde operator . white up pointing triangle m n p .  What is the value of x?
   

Do you UNDERSTAND?

5. Vocabulary What does the scale on a scale drawing indicate?

6. Error Analysis The polygons below are similar. Which similarity statement is not correct? Explain.

   

   1. T R U V ∼ N P Q U t r u v tilde operator n p q u
   2. R U V T ∼ Q U N P r u v t tilde operator q u n p
7. Reasoning Is similarity reflexive? Transitive? Symmetric? Justify your reasoning.

8. The triangles below are similar. What are three similarity statements for the triangles?