1-8 Math » . Angles and Lines » C.1. Angles

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Defining an Angle

• Overview
• Determine whether an angle is formed
• Count the angles in a closed figure
• Compare angles

Measuring an Angle

• Overview
• Using a protractor
• Measure the angle using a protractor
• Identify the angle given the measure

Classifying an Angle as Right, Acute, Obtuse, or Straight

• Overview
• Classify angles as right, acute, or obtuse
• Count right angles in a diagram
• Count right angles in a turn