Classifying Triangles and Quadrilaterals

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What defines an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are of equal length and all three angles are equal.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle where all three sides are of different lengths and all three angles are different.

Front

What is an obtuse triangle?

Back

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

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.

Front

What are the properties of a square?

Back

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

Front

What defines a rectangle?

Back

A rectangle is a quadrilateral with two pairs of parallel sides and four right angles.

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with two pairs of parallel sides.

Front

What is a trapezoid?

Back

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

Front

What is a rhombus?

Back

A rhombus is a quadrilateral with all four sides of equal length and opposite angles that are equal.