Unit 1 Geometry Vocab

Front

Represents a Point:

Back

Has no dimension. Represented by a small dot.

Front

Best description of a plane?

Back

Has two dimensions and extends without end.

Front

Line Segment

Back

A measurable part of a line with two endpoints and all points between.

Front

Part of a line with one endpoint, extending endlessly in one direction.

Back

ray

Front

Congruent Segments

Back

Segments with the same measure.

Front

Angle

Back

Intersection of two noncollinear rays at a common endpoint; rays are sides, endpoint is vertex.

Front

Midpoint

Back

The point on a segment exactly halfway between the endpoints.

Front

Segment Bisector

Back

A segment line or plane that intersects a segment at its midpoint.

Front

Acute Angle

Back

An angle with a degree measure less than 90.

Front

Obtuse Angle

Back

An angle > 90° and < 180°.