Geometry Vocabulary Flashcards

Front

Point

Back

An exact location in space with no size or dimension.

Front

Line

Back

A one-dimensional figure extending infinitely in both directions.

Front

Plane

Back

A flat, two-dimensional surface extending infinitely in all directions.

Front

Line Segment

Back

A part of a line with two endpoints.

Front

Ray

Back

A part of a line that starts at an endpoint and extends infinitely in one direction.

Front

Angle

Back

Formed by two rays sharing a common endpoint, measured in degrees.

Front

Acute Angle

Back

An angle less than 90°.

Front

Right Angle

Back

An angle exactly 90°.

Front

Obtuse Angle

Back

An angle greater than 90° but less than 180°.

Front

Straight Angle

Back

An angle exactly 180°.