Rhombus

Front

What is a rhombus?

Back

A rhombus is a quadrilateral with all four sides of equal length.

Front

What are the properties of a rhombus?

Back

1. Opposite angles are equal. 2. Adjacent angles are supplementary. 3. The diagonals bisect each other at right angles.

Front

How do you find the area of a rhombus?

Back

Area = (d1 * d2) / 2, where d1 and d2 are the lengths of the diagonals.

Front

What is the relationship between the angles in a rhombus?

Back

The opposite angles are equal, and the sum of adjacent angles is 180°.

Front

If one angle of a rhombus is 60°, what are the other angles?

Back

The other angles are 120°, 60°, and 120°.

Front

True/False: The diagonals of a rhombus are equal in length.

Back

False - the diagonals of a rhombus are not necessarily equal in length.

Front

What is the measure of each angle in a square?

Back

Each angle in a square measures 90°.

Front

If m∠B is 54°, what is m∠CDB in a rhombus?

Back

m∠CDB = 27°.

Front

True/False: Every rhombus is a square.

Back

False - a rhombus won't always have 90 degree angles.

Front

What is the sum of the interior angles of a rhombus?

Back

The sum of the interior angles of a rhombus is 360°.