**1. Which quadrilaterals have diagonals that intersect at right angles?**

Kite, arrowhead, rhombus and , of course, the square.

**2. What do a square and a rhombus have in common?**

They both have four

equalsides.

**3. What do a rhombus and a parallelogram have in common?**

They both have

OPPOSITEangles equal and opposite sides are parallel.