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Types of Angles: Acute, Right, Obtuse, Straight, Reflex - Learn and Practice

Learn about different types of angles - Acute, Right, Obtuse, Straight, Reflex. Understand angle measurements, draw angles correctly, use a protractor. Success criteria guide understanding and application.

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Types of Angles: Acute, Right, Obtuse, Straight, Reflex - Learn and Practice

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  1. What type of angle is it?

  2. Objectives • Understand the different types of angles • Acute • Right Angle • Obtuse • Straight Angle • Reflex • Draw angles correctly

  3. Vocabulary • Angle • Right Angle • Degrees • Position • Direction • North • East • South • West • Clockwise • Anti-Clockwise • Horizontal • Vertical • Grid • Turn • Compass • Whole • 360º • 180º • 90º • 45º

  4. Using your Compass N W E S

  5. Acute Angle • Acute angles are less than 90o.

  6. Right Angle Right angles are 90o

  7. Obtuse Angle Obtuse angles are more than 90o but less than 180o.

  8. Straight Angle Straight angles are180º.

  9. Reflex Angle Reflex angles are more than 180o.

  10. Remember… • Acute angles are less than 90o. • Right angles are 90o. • Obtuse angles are more than 90o but less than 180o. • Straight angles are 180º • Reflex angles are more than 180o.

  11. Success Criteria • I can understand the difference between an acute, right angles, obtuse, straight and reflex angles. • I can measure correctly? • I can label correctly? • Can I use a protractor?

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