Remember: Put the baseline along zero. Start at zero and read the mark where the second ray crosses, counting the small marks past the last number.
Read the degrees
1
The baseline lies along zero. How many degrees is the angle?
2
Is the angle acute, right or obtuse?
acuterightobtuse
3
Read the protractor. How many degrees is this angle?
4
Count the small marks. How many degrees is this angle?
5
Use the protractor. What kind of angle is this?
obtuserightacute
6
The ray points past 120. How many degrees is this angle?
7
This angle measures 140 degrees.
TrueFalse
Judge and compare angles
8
Which angle measures about 30 degrees?
ABC
9
Which angle is obtuse?
ABC
10
How many more degrees is a 150 degree angle than a 90 degree angle?
11
A 20 degree angle and a 50 degree angle are put side by side. How many degrees in all?
12
Put the angles in order from the smallest to the biggest.
A
C
B
13
Draw an angle that measures 60 degrees. Use a protractor.
14
Write what you do first when you read a protractor.
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