The answers are 1. Square: 4 angles, two pairs of parallel sides, all sides congruent. 2. Parallelogram: 4 angles, two pairs of parallel sides which are congruent. 3. Rectangle: 4 right angles, two pairs of parallel sides, all sides are congruent. 4. Trapezoid: 4 sides, one pair of parallel sides which don't have to be congruent.