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Classify each angle as acute, obtuse, right or straight

Classify each angle as acute, obtuse, right or straight. Angles, Angles Everywhere. Where do you see angles?. An angle is formed by two rays with a common endpoint called the vertex. vertex. vertex. vertex. An angle can be named by its vertex or by its vertex and a point form each ray.

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Classify each angle as acute, obtuse, right or straight

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  1. Classify each angle as acute, obtuse, right or straight

  2. Angles, Angles Everywhere

  3. Where do you see angles?

  4. An angle is formed by two rays with a common endpoint called the vertex. vertex vertex vertex

  5. An angle can be named by its vertex or by its vertex and a point form each ray. Angle C or Angle BCR or Angle RCB B R C

  6. Classifying angles • You can classify an angle by its measure. Acute – measures less than 90° Right – measures 90° Obtuse – measures greater than 90° but less than 180° Straight – measures 180°

  7. Using a protractor • Place the center point of the protractor on the vertex of the angle. • Place the protractor so that ray YZ passes through the 0° mark. • Using the scale that starts with 0° along ray YZ and the measure where ray YX crosses. • The measure of Angle XYZ is . X Z Y

  8. Websites • http://www.amblesideprimary.com/ambleweb/mentalmaths/protractor.html

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