Geometry Vocabulary

Figures or objects with the same size and shape.

• Collinear

• Congruent

• Equal

• Arcs

Tags

CCSS.8.G.A.2

The point on the line segment that divides it into two segments of equal length.

• Point

• Line segment

• Segment bisector

• Midpoint

Tags

CCSS.HSG.CO.A.1

Two different lines which do not share any points (no points of intersection).

• Perpendicular lines

• Line segment

• Parallel lines

• Segment bisector

Tags

CCSS.HSG.CO.A.1

Facts that we take as being true without being able to prove or disprove them.

• Axioms

• Theorems

• Hypotheses

• Laws

Tags

CCSS.HSG.CO.A.1

A line, segment, or ray that divides an angle into two congruent angles (two angles with the same measure).

• Segment bisector

• Obtuse angle

• Angle bisector

• Perpendicular

Tags

CCSS.HSG.CO.A.1

A portion of a circle or subset of points that lie on a circle.

• Arc

• Angle

• Radius

• Diameter

The collection (or set) of all points that are a fixed distance away from a fixed point.

• Plane

• Collinear

• Line

• Circle

Tags

CCSS.HSG.CO.A.1

Two angles whose measures add up to 180 degrees.

• Supplementary

• Complementary

• Parallel

• Perpendicular

Tags

CCSS.7.G.B.5

Has a measure between 180 degrees and 360 degrees.

• Complementary angles

• Supplementary angles

• Straight angle

• Reflex angle

Tags

CCSS.4.G.A.1

The geometric object created by two rays with a common starting point.

• Ray

• Line segment

• Angle

• Perpendicular lines

Tags

CCSS.4.G.A.1