In the diagram above, Z1 = 40°.
Find the measure of Z2.
Z2 = [?]°

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

How is working backward similar to solving an equation?