Geometry Basics

Front

Complementary Angles

Back

Two angles whose sum is 90 degrees.

Front

Supplementary Angles

Back

Two angles whose sum is 180 degrees.

Front

Congruent

Back

Figures or angles that have the same size and shape.

Front

Isosceles Triangle

Back

A triangle with at least two sides of equal length.

Front

Scalene Triangle

Back

A triangle with all sides of different lengths.

Front

Equilateral Triangle

Back

A triangle with all sides of equal length.

Front

Polygon

Back

A closed figure with three or more straight sides.

Front

Vertex

Back

A point where two or more lines, edges, or rays meet.

Front

Acute Angle

Back

An angle that is less than 90 degrees.

Front

Obtuse Angle

Back

An angle that is greater than 90 degrees but less than 180 degrees.