These figures are similar. The perimeter and area of one are given. The area of the other
is also given. Find its perimeter and round
to the nearest tenth. Acellus

Find the value of the cosine for angle a

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.

Don't know how to find x given these segment lengths