Geometry Terms Flashcards

Front

Congruent

Back

Figures that have the same size and shape.

Front

Angle

Back

A figure formed by two rays with a common endpoint.

Front

Diagonal

Back

A line segment other that a side that joins two vertices of a polygon.

Front

Concave polygon

Back

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

Front

Convex polygon

Back

A polygon with all interior angles less than 180 degrees.

Front

Polygon

Back

A simple closed figure with sides that are line segments.

Front

Side

Back

A line segment that forms part of a polygon; a ray that forms one part of an angle.

Front

Quadrilateral

Back

A polygon with four sides.

Front

Regular polygon

Back

A polygon with all sides and angles congruent.

Front

Vertex

Back

The common endpoint of two rays in an angle, of two line segments in a polygon, or of three or more edges in a space figure.