1. Name ______________________________________ Date _________________
Mrs. Labuski & Mrs. Rooney Period ___________ Lesson 7-2 Angles
VOCABULARY DEFINTION EXAMPLE
Is formed by two rays •A
with a common endpoint.
Angles are named by the B•
Angle
two rays using the •C
common endpoint in the angle ABC, ∠ABC
middle of the name. angle CBA, ∠CBA
The common endpoint of •A
the two rays.
Vertex The middle point in the B•
name should always be •C
the vertex.
vertex B
Acute angle Measures less than 90°
Right angle Measures exactly 90°
Measures more than 90°
Obtuse angle
and less than 180°
Straight angle Measures exactly 180° • • •
Tool used to measure
Protractor
angles
2.
3. Name ______________________________________ Date _________________
Mrs. Labuski & Mrs. Rooney Period ___________ Lesson 7-2 Angles
VOCABULARY DEFINTION EXAMPLE
•A
Angle B•
•C
angle ABC, ∠ABC
angle CBA, ∠CBA
•A
Vertex B•
•C
vertex B
Acute angle
Right angle
Obtuse angle
Straight angle • • •
Protractor
