### Home > INT2 > Chapter 2 > Lesson 2.3.1 > Problem 2-78

Decide if each pair of triangles below is similar. If the triangles are similar, justify your conclusion by stating the similarity condition you used. Also, describe a possible sequence of transformations that would carry one onto the other. If the triangles are not similar, explain how you know they are not similar. Homework Help ✎

a. | If two of the corresponding angles are congruent, what do you know about the third pair of angles? | b. | What are the angle measures of an equilateral triangle? Triangles are similar by AA ~ since all angle measures are 60°. The triangle on the right could be transformed into the triangle on the left by translation and dilation. |

c. | Write a ratio for each pair of corresponding sides. | d. | Find the measures of the unmarked angles. |