Isaac bought seven new magic cards to add to his collection this year the next day he gave half his entire collection to his friends there are now only 21 cards left how many cards did he start with

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.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

Fast! find the length of cu. the triangles are similar. show your work.