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Quadrilaterals a
| Term | Definition |
|---|---|
| Trapezoid | has parallel bases |
| Parallelogram | opposite sides are congruent, opposite sides are parallel, opposite angles are congruent, and diagonals bisect each other. |
| Rhombus | all sides are congruent, all properties of a parallelogram, diagonals are perpendicular bisectors of each other |
| Isosceles Trapezoid | congruent legs, and congruent diagonals |
| Rectangle | All angles are right angles, congruent diagonals. All properties of a parallelogram. |
| Square | All properties of a rhombus and a rectangle. |