9.2 ­ Angles
Objective: Name, measure, and
draw angles.
Mr. Williams
GESD
jwilliams@gesd40.org
1

Angle
Formed by two
rays with the
same endpoint.
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2

Vertex
The endpoint of
the rays that form
the angle.
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3

A B
Naming Angles
You can name an angle by its
vertex.
B C
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4

A B
Naming Angles
You can name an angle by its
vertex and two points.
ABC CBA
C
The vertex is always in the
middle.
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5

Your Turn:
With your group work on
pg. 425 problems 1 ­ 3
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6

Using a Protractor
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7

Your Turn:
With your group draw angles
with the following degrees:
o o o o o o
60 , 75 , 35 , 90 , 115 , 170
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8