Geometry Vocab (5th Grade)

Front

Exact location in space

Back

point

Front

Endless collection of points along a straight path

Back

line

Front

Part of a line with two endpoints

Back

Line segment

Front

Ray:

Back

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

Front

Endless flat surface named by any three non-collinear points.

Back

Plane

Front

Lines with one point in common; they touch.

Back

Intersecting lines

Front

Lines in the same plane that never intersect.

Back

Parallel lines.

Front

Perpendicular lines

Back

Two lines that intersect at right angles.

Front

acute angle

Back

angle < 90°

Front

Angle = 90°

Back

right