Classifying Triangles and Quadrilaterals

Front

What is a triangle classified as if it has all sides of different lengths?

Back

Scalene triangle

Front

What do you call a polygon with 4 sides?

Back

Quadrilateral

Front

What is a quadrilateral with 2 pairs of parallel sides and 4 right angles?

Back

Rectangle

Front

What is a quadrilateral with 2 pairs of parallel sides, 4 right angles, and all sides equal?

Back

Square

Front

What type of triangle has one angle that is exactly 90 degrees?

Back

Right triangle

Front

What do you call a triangle with one angle greater than 90 degrees?

Back

Obtuse triangle

Front

What is a triangle called if all its angles are less than 90 degrees?

Back

Acute triangle

Front

What is a quadrilateral with only one pair of parallel sides?

Back

Trapezoid

Front

What do you call a triangle with two sides of equal length?

Back

Isosceles triangle

Front

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

Back

180 degrees