Types of angles, corresponding

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  • Show me different angles

    • Types of angles for class 5.

    All angles name

  • What are the 12 types of angles
  • Types of angles for class 5
  • Obtuse angle
  • Types of angles and their names

    • Angles

    An angle measures the amount of turn

    Names of Angles

    As the Angle Increases, the Name Changes:

    Try It Yourself:

    geometry/images/angle-drag.js

    In One Diagram

    This diagram might make it easier to remember:

    Also: Acute, Obtuse and Reflex are in alphabetical order.

     


    Also: the letter "A" has an acute angle.

    Be Careful What You Measure

    The smaller angle is an Obtuse Angle,
    but the larger angle is a Reflex Angle

    So when naming the angles make sure that you know which angle is being asked for!

    Positive and Negative Angles

    When measuring from a line:

    • a positive angle goes counterclockwise (opposite direction that clocks go)
    • a negative angle goes clockwise

    Example: −67°

     

     

    Parts of an Angle

    The corner point of an angle is called the vertex

    And the two straight sides are called arms

    The angle is the amount of turn between each arm.

     

    How to Label Angles

    There are two main ways to label angles:

    1.

    give the angle a name, usually a lower-case letter like a or b, or sometimes a

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