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Understanding Angles: Acute or Obtuse Measurement Techniques

This lesson teaches students how to identify acute and obtuse angles using a protractor. Mr. Zampetti explains the process and shares tips on reading and measuring angles properly. The Smart Board Activity enhances learning through interactive engagement, followed by homework to reinforce understanding.

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Understanding Angles: Acute or Obtuse Measurement Techniques

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Presentation Transcript

  1. Name the angles as being acute or obtuse:

  2. Using a Protractor Geometry Unit 1, Day 2 Mr. Zampetti

  3. Protractors • A protractor is used to measure angles

  4. Using a Protractor • When using a protractor, put the hole of the protractor on the vertex of the angle. VERTEX

  5. Reading a Protractor • Usually, Protractors have 2 sets of numbers going in opposite directions. • When you are reading a protractor, decide if the angle is more or less than 90

  6. Read this protractor • Is the angle greater or less than 90?

  7. Smart Board Activity • Using a Protractor.notebook

  8. Homework • Finish Packet

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