Acute

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ABC
Angles Classifying and Naming By Mitzy Liane
Knotts 1st period
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Acute?
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Tutorial Guide
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Answer Box
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This is just for your own convenience.
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Classifying Angles

• There are 4 ways to classify angles. You can
  label them acute, right, obtuse, or straight.
  Whats the difference?
• Acute-an angle with the measure between 0 and 90.
• Obtuse-an angle with the measure between 90 and
  180.
• Right-an angle with measure equal to 90.
• Straight-an angle with measure equal to 180.

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Examples
Straight Angle
Right Angle
Obtuse Angle
Acute Angle
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Try These

• Classify this angle.

Right Angle
Acute Angle
Obtuse Angle
Straight Angle
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2. Classify this angle.
Right Angle
Obtuse Angle
Straight Angle
Acute Angle
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3. Classify this angle.
Obtuse Angle
Acute Angle
Straight Angle
Right Angle
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4. Classify this angle.
Obtuse Angle
Straight Angle
Acute Angle
Right Angle
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Naming Angles

• Naming an angle is doing nothing but naming the
  connected points. There should always be three.

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Examples
B
A
The name of this angle is ABC.
The name of this angle is DEF.
D
C
X
Z
E
F
The name of this angle is XYZ.
Y
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Try This
B
C

A

1. Which does not name this angle?
ABC
Neither
CBA
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Congratulations! You have completed this tutorial
on angles.
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Resources

• My mind.
• Mrs. Gatlins Notes.
• McDougal Littell Textbook.

Thank You!
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That's All, Folks!