Transcript
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9.3 Classifying Angles
Objective:Classify angles and find anglemeasures.
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Right Angle
Acute Angle
Obtuse Angle
Straight Angle
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Right Angle any angle whose measure is exactly 90 degrees.
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Acute Angle
An angle whose measure is less than 90 degrees.
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Obtuse AngleAn angle whose measure isbetween 90 and 180 degrees.
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Straight Angle
An angle whose measureis exactly 180 degrees.
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Your Turn:
In your math notes and with your group work on
PAGE 430 Problems 1 4
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A
B
Vertical Angles
Angles opposite each other. Have equal measures.
Angle A = 135 degrees
Angle B =
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Complementary Angles Two angles whose sumof their measures is 90 degrees.
30 degre
es60 degre
es
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Supplementary Angles Two angles whose sumof their measures is180 degrees.
120 degrees60 degrees
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Your Turn:
In your math notes and with your group work on
PAGE 431 Problems A & B
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