Topic 15 Vocabulary (Lines and Angles)

An angle that forms a straight line and measures 180 degrees.

• protractor

• straight angle

• acute angle

• right angle

Tags

CCSS.4.G.A.1

A part of a line with two endpoints

• line segment

• line

• ray

• angle

Tags

CCSS.HSG.CO.A.1

A straight path that goes on forever in two directions.

• line segment

• point

• ray

• line

Tags

CCSS.4.G.A.1

This figure is formed when two rays meet at the same endpoint.

• point

• ray

• angle

• line

Tags

CCSS.4.G.A.1

The tool we use to measure angles.

• thermometer

• ruler

• protractor

• balance

Tags

CCSS.4.MD.C.6

This angle measure 90 degrees and forms a square corner.

• right angle

• obtuse angle

• acute angle

• straight angle

Tags

CCSS.4.G.A.1

This angle opens MORE than a right angle.

• right angle

• obtuse angle

• acute angle

• straight angle

Tags

CCSS.4.G.A.1

This angle opens LESS than a right angle.

• straight angle

• right angle

• obtuse angle

• acute angle

Tags

CCSS.4.G.A.1

A straight path that begins at one point and goes on forever in one direction.

• point

• ray

• line

• angle

Tags

CCSS.4.G.A.1

A location on a flat plane

• ray

• line

• angle

• point

Tags

CCSS.4.G.A.1