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Angle Classification

100

The name of an angle that is less than 90^o

acute

200

The name of an angle that is 90⁰

a right angle

300

The name of an angle that is greater than 90^o

obtuse

400

The degree of an angle that is flat 

180^o

500

The name of two angles that equal each other 

congruent angles

Angle Vocabulary

100

The vertex for angle EDF

point D

200

Two of these create an angle

ray

300

An ____ _____ cuts an angle into two equal and smaller angles

angle bisector

400

Two angles that add up to 90⁰

complementary angles

500

Two angles that add up to 180^o

supplementary angles

2.1 Vocabulary

100

A type of  line with 2 endpoints

line segment

200

Points that DO NOT lie on the same line

non-collinear points

300

A flat surface made up of 3 or more points

plane

400

Points that lie on the same plane

coplanar

500

Two planes intersect at a _____

line