Defined and Undefined Terms in Geometry

words that do not have formal definitions but there is an agreement about what they mean

• Defined Terms

• Undefined Terms

Tags

CCSS.4.G.A.1

terms that can be described using known terms like Point or Line

• Defined Terms

• Undefined Terms

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

the most basic building block of geometry, has no size but has a location and is denoted by a single capital letter

• Point

• Line

• Plane

• Collinear Points

• Coplanar Points

Tags

CCSS.HSG.CO.A.1

a straight, continuous arrangement of infinitely many points, has an infinite length but no thickness and extends infinitely in both directions

• Point

• Line

• Plane

• Collinear Points

• Coplanar Points

Tags

CCSS.4.G.A.1

has length and width but no thickness and extends infinitely along its length and width

• Point

• Line

• Plane

• Collinear Points

• Coplanar Points

Tags

CCSS.4.G.A.1

points that lie along the same line

• Point

• Line

• Plane

• Collinear Points

• Coplanar Points

Tags

CCSS.HSG.CO.A.1

points that lie in the same plane

• Point

• Line

• Plane

• Collinear Points

• Coplanar Points

a part of a line that is bounded by two distinct end points

• Line Segment

• Ray

• Intersection

Tags

CCSS.HSG.CO.A.1

a part of a line that has a fixed starting point but no end point

• Line Segment

• Ray

• Intersection

Tags

CCSS.4.G.A.1

a point, line, or curve that is shared between two or more geometric figures

• Line Segment

• Ray

• Intersection