Classifying Triangles and Quadrilaterals

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths and all angles of different measures.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are equal in length and all angles are equal to 60 degrees.

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle equal to 90 degrees.

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length.

Front

How many pairs of parallel lines does a parallelogram have?

Back

A parallelogram has two pairs of parallel lines.

Front

What is a rectangle?

Back

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

Front

What is a square?

Back

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

Front

What is a rhombus?

Back

A rhombus is a quadrilateral with all four sides of equal length, but angles are not necessarily right angles.