6.4 Special Parallelograms. Theorem 6.9 Each diagonal of a rhombus bisects two angles of the rhombus.

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Presentation transcript:

6.4 Special Parallelograms

Theorem 6.9 Each diagonal of a rhombus bisects two angles of the rhombus

Theorem 6.10 The diagonals of a rhombus are perpendicular

Theorem 6.11 The diagonals of a rectangle are congruent

Theorem 6-12 If one diagonal of a parallelogram bisects two angles of the parallelogram, then the parallelogram is a rhombus

Theorem 6.13 If the diagonals of a parallelogram are perpendicular, then the parallelogram is a rhombus

Theorem 6.14 If the diagonals of a parallelogram are congruent, then the parallelogram is a rectangle

Classwork/Homework Pgs # 1-18 odd, (just name all the quadrilateral with the characteristics)