1. a equilateral have 4 equal sides and 4 right angles 2. a quadrilateral having 4 right angles. it's opposite sides are equal. 3. a quadrilateral having 2 pairs of parallel sides and it's opposite sides are equal. 4. a quadrilateral having one pair of opposite sides parallel.
a. rhombus b. square c. rectangle d. trapezoid e. parallelogram