Geometry Basics

Front

Point

Back

A single location in space or on a flat surface

Front

Line

Back

A collection of points that continues forever in both directions

Tags

CCSS.HSG.GPE.B.6

Front

Ray

Back

A part of a line with one endpoint that continues in one direction

Tags

CCSS.4.G.A.1

Front

Line Segment

Back

Part of a line with two endpoints

Tags

CCSS.6.G.A.3

Front

Parallel lines, segments or rays

Back

Two lines in the same plane that never intersect, they have the same slope

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

Intersecting lines, segments or rays

Back

Two lines that pass through the same point, different slopes

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

Perpendicular lines, segments or rays

Back

Lines that intersect and form four right (90 degree) angles, slopes are opposite signs + - and reciprocals

Front

Angle

Back

Two rays that share an endpoint (vertex)

Tags

CCSS.4.MD.C.6

Front

Acute Angle

Back

An angle that measures between 0 and 90 degrees

Tags

CCSS.8.G.A.5

Front

Obtuse Angle

Back

An angle that measures between 90 and 180 degrees

Tags

CCSS.4.G.A.2