Question

Suppose the diagonals of a parallelogram are both perpendicular and congruent. Which type of special quadrilateral is it? Use the most descriptive name possible.

A. rhombus
B. rectangle
C. square
D. parallelogram

Answer 1

C. Square

For the angles to be perpendicular they must be at 90°, which means the shape must have a right angle, which eliminates rhombus and parallelogram. Square is congruent because the angles and lengths are all the same.