Geometry Vocabulary

Front

What is a polygon with five sides called?

Back

A pentagon.

Tags

CCSS.2.G.A.1

Front

What type of triangle has one angle larger than 90 degrees?

Back

An obtuse triangle.

Tags

CCSS.4.G.A.2

Front

What do you call lines that are the same distance apart and never intersect?

Back

Parallel lines.

Tags

CCSS.HSG.CO.A.1

Front

What is a triangle called that has all sides of equal length and all angles of equal size?

Back

An equilateral triangle.

Tags

CCSS.4.G.A.2

Front

What is any closed two-dimensional figure with at least three straight sides called?

Back

A polygon.

Tags

CCSS.2.G.A.1

Front

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

Back

180 degrees.

Tags

CCSS.8.G.A.5

Front

What is the term for a polygon with four sides?

Back

A quadrilateral.

Tags

CCSS.2.G.A.1

Front

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

Back

An acute triangle.

Tags

CCSS.4.G.A.2

Front

What is the term for a line segment that connects two non-adjacent vertices of a polygon?

Back

A diagonal.

Front

What is the name of a polygon with eight sides?

Back

An octagon.

Tags

CCSS.2.G.A.1