Unit 4 Geometry vocab

polygon

A closed figure with at least 3 sides made of only straight lines with no curves.

consecutive

Angles, Vertices, and sides that are directly next to eachother

Diagonal

A line segment that connects 2 non-consecutive vertices

Concave

Any polygon with inverted sides

convex

Any polygon with no sides pointing inwards and no diagonals outside of the polygon

Equiangular

A polygon where all angles are equal

Equilateral

A polygon with all sides of the same measure

Regular polygon

any polygon that is equilateral and equiangular

Perimeter

Distance around the edge of a polygon

Triangle

A polygon with 3 sides

Quadrilateral

Polygon with 4 sides

Pentagon

A polygon with 5 sides

hexagon

A polygon with 6 sides

heptagon

A polygon with 7 sides

Octagon

Polygon with 8 sides

Nonagon

A polygon with 9 sides

Decagon

A polygon with 10 sides

Undecagon

A polygon with 11 sides

Dodecagon

A polygon with 12 sides

N-gon

Any polygon with “N” number of sides