Geometry Vocabulary

Extends forever in both directions

• Point

• Line

• Ray

• Line Segment

Tags

CCSS.4.G.A.1

Part of a line that extends forever in one direction.

• Point

• Line

• Line Segment

• Ray

Tags

CCSS.4.G.A.1

Part of a line that has two endpoints.

• Point

• Line Segment

• Ray

• Line

Tags

CCSS.4.G.A.1

Two lines that intersect and form a right angle.

• Perpendicular Lines

• Parallel Lines

• Intersecting Line

• Long Lines

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

Two lines that never meet and are always the same distance apart.

• Perpendicular Lines

• Parallel Lines

• Intersecting Lines

• Straight Lines

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

An angle that is less than 90 degrees

• Acute Angle

• Obtuse Angle

• Right Angle

• Reflex Angle

Tags

CCSS.4.G.A.1

An angle that is exactly 90 degrees.

• Acute Angle

• Right Angle

• Obtuse Angle

• Reflex Angle

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

CCSS.4.MD.C.5

An angle that is between 90 degrees and 180 degrees.

• Acute Angle

• Right Angle

• Obtuse Angle

• Straight Angle

Tags

CCSS.4.G.A.1

CCSS.4.MD.C.5

A closed figure made up of straight sides.

• Circle

• Prism

• Pyramid

• Polygon

Tags

CCSS.5.G.B.3

CCSS.5.G.B.4

A three-sided polygon

• Triangle

• Quadrilateral

• Pentagon

• Hexagon

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2