Lines and Angles Vocabulary

lines that cross at right angles

• parallel

• intersecting

• perpendicular

• tangential

Tags

CCSS.HSG.CO.A.1

lines that will never cross

• intersecting

• perpendicular

• parallel

• converging

Tags

CCSS.HSG.CO.A.1

greater than 90 degrees

• acute angle

• right angle

• obtuse angle

• straight angle

Tags

CCSS.4.G.A.1

less than 90 degrees

• obtuse angle

• right angle

• acute angle

• straight angle

Tags

CCSS.4.G.A.1

lines that cross (but do not form right angles)

• intersecting

• parallel

• perpendicular

• converging

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

a part of a line that has a fixed starting point and goes on forever in one direction

• line

• segment

• ray

• vector

Tags

CCSS.4.G.A.1

an angle that is exactly 90 degrees

• acute angle

• obtuse angle

• right angle

• straight angle

Tags

CCSS.4.G.A.1

an angle that is exactly 180 degrees

• acute angle

• obtuse angle

• straight angle

• right angle

Tags

CCSS.4.G.A.1

the point where two lines meet

• vertex

• intersection

• angle

• line segment

Tags

CCSS.HSG.CO.A.1

the space between two intersecting lines

• angle

• line

• point

• plane

Tags

CCSS.4.G.A.1