Measure the angle in degrees. A protractor shows points plotted at 0 and 60 degrees. Rays go out from a vertex at the protractor's center and through each point. The area between the rays is shaded.
180
180
170
170
160
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140
140
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130
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120
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110
100
100
90
90
80
80
70
70
60
60
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30
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10
10
0
0
A