Explanation
Quadrilaterals have special properties:
-
Parallelogram: opposite sides equal, opposite angles equal, diagonals bisect
-
Rectangle: all angles 90°, diagonals equal
-
Rhombus: all sides equal, diagonals perpendicular
-
Square: all sides equal, all angles 90°, diagonals equal and perpendicular
-
Trapezoid: one pair of parallel sides