Geometry Vocabulary

Front

A location in space that is represented by a dot and has no dimensions

Back

Point

Tags

CCSS.4.G.A.1

Front

A term that represents an infinite set of points with no thickness and its length continues in two opposite directions indefinitely.

Back

Line

Tags

CCSS.4.G.A.1

Front

A part of a line between two points on the line.

Back

Line Segment

Tags

CCSS.HSG.CO.A.1

Front

A part of a line that begins at a point and continues forever in one direction

Back

Ray

Tags

CCSS.4.G.A.1

Front

The point at each end of a line segment or at the beginning of a ray

Back

Endpoint

Tags

CCSS.HSG.CO.A.1

Front

The location at which two lines, line segments or rays intersect

Back

Vertex

Tags

CCSS.HSG.CO.A.1

Front

A figure created by two distinct rays that share a common endpoint (also known as a vertex).

Back

Angle

Tags

CCSS.4.G.A.1

Front

Exactly the same shape and size. Represented by the symbol ≅

Back

Congruent

Tags

CCSS.8.G.A.2

Front

Two or more co-planar lines that never intersect

Back

Parallel Lines

Tags

CCSS.HSG.CO.A.1

Front

Two lines that intersect to form a right angle

Back

Perpendicular Lines

Tags

CCSS.HSG.CO.A.1