A rectangle that is 4 inches by 3 inches has been scaled by a factor of 6. 1. What are the side lengths of the scaled copy?
2. Suppose you want to scale the copy back to its original size. What scale
factor should you use?

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.