ESL Polygon Vocabulary

a plane figure with at least three straight sides and angles

a line segment that joins two vertices in a shape

• side(s)

• vertex/vertices

• interior angles

• exterior angles

a point where two sides meet

• side(s)

• vertex/vertices

• interior angles

• exterior angles

the angles INSIDE a shape

• side(s)

• vertex/vertices

• interior angles

• exterior angles

the angles OUTSIDE of a shape

• side(s)

• vertex/vertices

• interior angles

• exterior angles

a closed figure; all interior angles are less than 180°

a polygon that has at least one (1) interior angle greater than 180°

a polygon with n sides.

*N=can be a number ≥ 3 (3 or more)

• n-gon

• equilateral

• equiangular

• regular

a polygon with all equal sides

• n-gon

• equilateral

• equiangular

• regular

a polygon with all equal angles

• n-gon

• equilateral

• equiangular

• regular