4.5 - Properties of Quadrilaterals

The diagonals of a rectangle are congruent.

• always true

• sometimes true

• never true

The diagonals of a parallelogram are perpendicular.

• always true

• sometimes true

• never true

A parallelogram is a rhombus.

• always true

• sometimes true

• never true

The diagonals of a rhombus bisect each other.

• always true

• sometimes true

• never true

A rhombus is equilateral (has all equal sides).

• always true

• sometimes true

• never true

Quadrilateral ABCD is a Parallelogram. Find m∠DCA = _______°

Quadrilateral ABCD is a Parallelogram.

Find m∠DAB = _______°

Quadrilateral ABCD is a Rhombus. Given m∠ADE = 27°, find m∠DAE = ______°

Quadrilateral ABCD is a Rhombus. Given m∠CAB = 71°, find m∠CEB = ______°

Quadrilateral ABCD is a Rhombus. Given m∠DAB = 140° find m∠ADE = ______°