Understanding Angles in Geometry
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Questions and Answers

What is the measure of a reflex angle?

  • Exactly 180°
  • More than 180° but less than 360° (correct)
  • Less than 90°
  • Exactly 360°
  • Which of the following angles could be part of a pair of complementary angles?

  • 100° and 80°
  • 45° and 145°
  • 90° and 90°
  • 60° and 30° (correct)
  • What defines a whole angle?

  • An angle measuring more than 270°
  • An angle measuring less than 180°
  • An angle measuring exactly 90°
  • An angle measuring exactly 360° (correct)
  • Which pair of angles are supplementary angles?

    <p>45° and 135°</p> Signup and view all the answers

    What is a necessary characteristic of complementary angles?

    <p>Their sum measures 90°</p> Signup and view all the answers

    Study Notes

    Reflex Angle

    • An angle larger than a straight angle (180°) but smaller than a whole angle (360°).
    • Measured between 180° and 360°.

    Whole Angle

    • An angle measuring exactly 360°.
    • Represents a full circle.

    Complementary Angles

    • Two angles that add up to 90°.
    • Form a right angle together.

    Supplementary Angles

    • Two angles that add up to 180°.
    • Form a straight angle together.
    • Complementary and supplementary angles can be adjacent or non-adjacent.

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    Description

    This quiz covers key concepts related to angles, including reflex, whole, complementary, and supplementary angles. Test your knowledge on how these angles are defined and how they relate to each other within geometric principles.

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