Classifying Quadrilaterals and Triangles

Front

What is a quadrilateral?

Back

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

Front

What is a trapezoid?

Back

A trapezoid is a quadrilateral with at least one pair of parallel sides.

Front

What is a square?

Back

A square is a quadrilateral with four equal sides and four right angles.

Front

What is a rectangle?

Back

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

Front

What is a rhombus?

Back

A rhombus is a quadrilateral with all four sides equal in length and opposite angles equal.

Front

How many sides does a triangle have?

Back

A triangle has three sides.

Front

What is an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is the sum of the angles in a quadrilateral?

Back

The sum of the angles in a quadrilateral is 360 degrees.

Front

What is the difference between a square and a rectangle?

Back

A square has all sides equal, while a rectangle has opposite sides equal.