Andrew is using three pieces of scrap wood
to build a wall shelf in his bathroom. The shelf
will be shaped like a triangle, and the pieces of
scrap wood measure 12 inches, 15 inches and 9
inches long. Will the shelf be shaped like a right
triangle? Why or why not?

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?