Name
Identify and Describe Angles
Many real-world objects contain a right angle.
Any angle smaller than a right angle is an acute angle. Any angle
larger than a right angle is an obtuse angle. A straight line is an
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example of a straight angle.
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acute angle
EXAMPLES
obtuse angle
straight angle
Classify each angle as right, acute,
obtuse, or straight.
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2
1
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The angle
is larger than a right
angle, but is not a straight
angle. It is an obtuse angle.
Exercises
Look at the top of the hat. The
angle is smaller than a right
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It is an acute angle.
Classify each angle as right, acute, obtuse, or straight.
1.
2.
3.
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48 Map for Success
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Exercises
4.
5.
6.
7. OH3-034A-112377
8.
9.
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Classify each angle as right, acute, obtuse, or straight.
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Draw hands on each clock to show the time. Classify the angle.
10. 9:00
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12
10
9
8
12. 3:45
11
1
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11. 1:30
2
3
7 6 5
13. 2:20
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14. Sarah started getting ready for soccer at 5:30. She left for practice
when the clock hands next formed a straight angle. What time did
she leave?
15. Draw three different obtuse angles.
16.
WR ITING IN MATH Choose three objects in your classroom that have angles.
Describe how to classify each angle as acute, obtuse, right, or straight.
Identify and Describe Angles
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