Geometry Unit 1 Vocabulary

Two coplanar lines that never intersect

• Parallel Lines

• Perpendicular Lines

• Collinear

• Coplanar

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.CO.C.9

CCSS.HSG.GPE.B.5

An angle less than 90°

• acute angle

• obtuse angle

• right angle

• straight angle

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.SRT.C.6

A flat surface with two dimensions: length and width

• plane

• coplanar

• vertex

• collinear

Tags

CCSS.HSG.MG.A.1

A 90° angle

• right angle

• acute angle

• obtuse angle

• straight angle

Tags

CCSS.HSG.CO.A.1

Found on the same plane

• vertex

• collinear

• coplanar

• intersection

Tags

CCSS.HSG.CO.A.1

Found on the same line

• point

• vertex

• coplanar

• collinear

Tags

CCSS.HSG.CO.A.1

A figure comprised of two rays and a common endpoint

• plane

• angle

• line

• vertex

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.CO.C.9

An angle greater than 90° but less than 180°

• acute angle

• right angle

• obtuse angle

• straight angle

Tags

CCSS.4.G.A.1

Lines that meet at 90° angles

• right angle

• perpendicular lines

• parallel lines

• collinear

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.CO.C.9

CCSS.HSG.GPE.B.5

The point at which the rays of an angle meet

• acute angle

• vertex

• sides

• degrees

Tags

CCSS.HSG.CO.A.1