Geometry Vocabulary

Define Acute

• Less than 90
• Exactly 90
• Greater than 90 and less than 180
• Exactly 180

Tags

CCSS.HSG.CO.A.1

CCSS.HSG.SRT.C.6

Define Obtuse

• Less than 90
• Exactly 90
• Greater than 90 and less than 180
• Exactly 180

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

An angle whose measure is exactly 90 degrees.

• acute
• vertical
• right
• straight

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

CCSS.4.MD.C.5

an angle that measures greater than 90* but less than 180*

• acute angle

• obtuse angle

• straight angle

• right angle

Tags

CCSS.4.G.A.1

lines that never intersect and are always the same distance apart

• perpendicular lines

• intersecting lines

• parallel lines

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

part of a line that begins at one endpoint and continues without end in one direction

• ray

• point

• line segment

• line

Tags

CCSS.4.G.A.1

an angle that measures exactly 90*

• acute angle

• obtuse angle

• straight angle

• right angle

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

part of a line between two points on the line (endpoints)

• ray

• line

• line segment

• point

Tags

CCSS.4.G.A.1

lines that intersect at right angles to form a right angle

• parallel lines

• perpendicular lines

• points

• intersecting lines

Tags

CCSS.4.G.A.1

CCSS.4.G.A.2

Two rays joined at a common endpoint

• point

• line

• angle

• segment

Tags

CCSS.4.G.A.1

CCSS.4.MD.C.5