I need the formula to this question.

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.

Need on this geometry question. explain how you did it.

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.