Classifying Shapes Vocabulary

Front

What is an angle that measures less than 90°?

Back

Acute angle

Front

What shape has 8 sides?

Back

Octagon

Front

What tool do you use to measure angles?

Back

Protractor

Front

What type of angle measures exactly 90°?

Back

Right angle

Front

What is a quadrilateral with one pair of parallel sides?

Back

Trapezoid

Front

What do you call a polygon with 5 sides?

Back

Pentagon

Front

What is the name of a triangle with all sides equal?

Back

Equilateral triangle

Front

What is a shape with 6 sides called?

Back

Hexagon

Front

What type of angle measures more than 90° but less than 180°?

Back

Obtuse angle

Front

What is a closed figure with straight sides?

Back

Polygon