| Quadrilateral | Property | Plus... |
| If PARALLELOGRAM, then opposite sides | |
| If PARALLELOGRAM, then opposite sides | |
| If PARALLELOGRAM, then opposite angles | |
| If PARALLELOGRAM, then consecutive angles | |
| If PARALLELOGRAM, then diagonals | |
| If RECTANGLE, then all angles | |
| If RECTANGLE, then diagonals | |
| If RHOMBUS, then all sides | |
| If RHOMBUS, then diagonals | |
| | Quadrilateral | Property | Plus... |
| If RHOMBUS, then diagonals | |
| If TRAPEZOID, then exactly one pair opposite sides | |
| If ISOSCELES TRAPEZOID, then legs | |
| If ISOSCELES TRAPEZOID, then diagonals | |
| If ISOSCELES TRAPEZOID, then base angles | |
| If KITE, then two pairs consecutive sides ___ but no pairs opposite sides ___ | |
| If KITE, then diagonals | |
| If KITE, then exactly one pair opposite angles | |
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