Quadrilaterals Flashcard

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides, four vertices, and four angles.

Front

What are the properties of a parallelogram?

Back

A parallelogram has opposite sides that are equal and parallel, opposite angles that are equal, and the diagonals bisect each other.

Front

How do you find the missing angles in a parallelogram?

Back

In a parallelogram, the sum of the interior angles is 360°. Opposite angles are equal, and adjacent angles are supplementary.

Front

If one angle of a parallelogram is 60°, what are the measures of the other three angles?

Back

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

Front

What is the relationship between the sides of a rhombus?

Back

In a rhombus, all four sides are of equal length.

Front

How do you find the length of a diagonal in a rhombus?

Back

The diagonals of a rhombus bisect each other at right angles and can be found using the Pythagorean theorem.

Front

What defines a rectangle?

Back

A rectangle is a quadrilateral with four right angles and opposite sides that are equal.

Front

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

Back

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

Front

If m∠A = 125° and m∠B = 45°, what can be said about quadrilateral ABCD?

Back

Quadrilateral ABCD is not a parallelogram or rectangle since the angles do not satisfy the properties of those shapes.

Front

What is the measure of the angles in a square?

Back

All angles in a square measure 90°.