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Special parallelograms 5-4. Definitions Rectangle- a quadrilateral with 4 right angles Rhombus - a quadrilateral with 4 congruent sides Square - a quadrilateral.

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Presentation on theme: "Special parallelograms 5-4. Definitions Rectangle- a quadrilateral with 4 right angles Rhombus - a quadrilateral with 4 congruent sides Square - a quadrilateral."— Presentation transcript:

1 Special parallelograms 5-4

2 Definitions Rectangle- a quadrilateral with 4 right angles Rhombus - a quadrilateral with 4 congruent sides Square - a quadrilateral with 4 right angles, and 4 congruent sides.

3 Diagonals The diagonals of a rectangle are congruent. The diagonals of a rhombus are perpendicular. Each diagonal of a rhombus bisects 2 angles of the rhombus.

4 Theroems The midpoint of the hypotenuse of a right triangle is equidistant from the 3 vertices. If an angle of a parallelogram is a right angle, then the parallelogram is a rectangle.

5 Theorems Cont. If two consecutive sides of a parallelogram are congruent, then the parallelogram is a rhombus.

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