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4th Grade Math - Types of Angles

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4th Grade Math - Types of Angles

  1. 1. Types of Angles
  2. 2. Four Types of Angles• In geometry, there are four different types of angles that measure 180: or less.• The four types of angles are acute, right, obtuse, or straight.• Measuring an angle using a protractor can help you determine if the angle is an acute, right, obtuse, or straight angle.
  3. 3. Acute Angle• An acute angle is an angle that measures greater than 0: (degrees) and less than 90:.
  4. 4. Right Angle• A right angle is an angle formed by two perpendicular lines. It measures exactly 90:.
  5. 5. Obtuse angle• An obtuse angle is an angle that measures greater than 90: and less than 180:.
  6. 6. Straight angle• A straight angle is an angle that measures exactly 180:.
  7. 7. More examples

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