Vocab Group 3: Polygons

Front

Polygon

Back

A closed figure formed by a finite number of straight line segments.

Front

Vertex

Back

A point where two or more line segments meet.

Front

Side

Back

A line segment that forms part of the boundary of a polygon.

Front

Convex

Back

A polygon where all interior angles are less than 180 degrees.

Front

Concave

Back

A polygon that has at least one interior angle greater than 180 degrees.

Front

Diagonal

Back

A line segment that connects two non-adjacent vertices of a polygon.

Front

Perimeter

Back

The total distance around the outside of a polygon.

Front

Equilateral polygon

Back

A polygon with all sides of equal length.

Front

Equiangular polygon

Back

A polygon with all angles of equal measure.

Front

Regular polygon

Back

A polygon that is both equilateral and equiangular.