Section 2: Summary – Properties of ... - Willets Geometry

29. All 4 pairs of consecutive angles are supplementary
30. Both pairs of opposite sides are parallel and diagonals are perpendicular
31. Parallelogram with congruent diagonals
32. Both pairs of opposite sides are congruent
33. Parallelogram with congruent and perpendicular diagonals
Part 5 – Review Questions
1. A polygon with four sides is called a_________.
2. If the diagonals of a quadrilateral bisect each other, then the quadrilateral must be a _____.
3. If the diagonals of a parallelogram are congruent, then the parallelogram must be a ______.
4. If the diagonals of a parallelogram are perpendicular, then the parallelogram must be a _____.
5. If the diagonals of a parallelogram are congruent and perpendicular, then the parallelogram
must be a ____.
6. In any parallelogram, consecutive angles are ________.
7. If the opposite angles of a parallelogram are supplementary, then the parallelogram
must be a _______
8. (TF) A parallelogram is a quadrilateral where both pairs of opposite sides are parallel.
9. (TF) If the diagonals of a parallelogram are congruent and perpendicular, then the
parallelogram is always a square.
10. (TF) An equiangular, equilateral quadrilateral must be a square.
11. (TF) If a quadrilateral is equilateral, then it must be a square.
12. (TF) Every rhombus is equiangular.
13. (TF) The diagonals of a trapezoid are always congruent.
14. (TF) The diagonals of an isosceles trapezoid bisect each other.
15. (TF) A square is a rhombus.
16. (TF) If the diagonals of a parallelogram are congruent, then the parallelogram must be a
rectangle.
Fill in the blanks with “Always”, “Sometimes” or “Never”
17. The opposite angles of a parallelogram are congruent.
18. The opposite angles of a parallelogram are supplementary.
19. The diagonals of a parallelogram are congruent.
20. The diagonals of a rhombus are congruent.