Basics of Geometry Vocabulary

A place. A dot on the coordinate plane.

• Point

• Line

• Plane

• Angle

Tags

CCSS.HSG.CO.A.1

Has at least two points and extends infinitely. Normally has two arrows at the end.

• Angle

• Ray

• Line

• Plane

Tags

CCSS.4.G.A.1

Flat surface. Has at least 3 non-collinear points.

• Line

• Plane

• Point

• Ray

Tags

CCSS.4.G.A.1

Points on the same line

• coplanar

• supplementary

• linear pair

• collinear

Tags

CCSS.HSG.CO.A.1

Points on the same plane

• coplanar

• collinear

• supplementary

• complementary

Part of a line. Has two endpoints.

• Ray

• Line Segment

• Endpoint

• Collinear

Tags

CCSS.HSG.CO.A.1

What starts and stops a line segment

• Ray

• Arrow

• Endpoint

• Angle

Tags

CCSS.HSG.CO.A.1

Has one initial point and continues in one direction.

• Endpoint

• Line

• Circle

• Ray

Tags

CCSS.4.G.A.1

Starting point of a ray

• Initial point

• Vertex

• Midpoint

• Endpoint

Tags

CCSS.4.G.A.1

Same initial point, two rays in the exact opposite direction

• Point

• Opposite Rays

• Line

• Angle

Tags

CCSS.4.G.A.1