Construct a rectangle (a and b of known length, d diagonal)

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Select the two pairs of figures that are similar.

If two angles of a triangle have equal measures and the third angle measures 90°, what are the angle measures of the triangle? a. 60°, 60°, 60° b. 45°, 90°, 90° c. 30°, 30°, 90° d. 45°, 45°, 90°