she will need 18 boxes total :)
The answer is a. You find the area of each shape and add them
hear here is your answer in attachment attach
180 = 3x + 5x + 2x +5
180 = 10x + 5
175 = 10x
x = 17.5
180 is how many degrees in a triangle
Because both of the polygons are congruent and are flipped so there for they are the same angle