Angles

MADHURI GUTTIKONDA, Oct 22, 2024

Angles - Identification , Classification

Table of Contents

  1. Measuring Angles
    1. Measuring Angles with a Protractor
  2. Categorizing Angles
    1. Categorizing Angles Practice
  3. Identifying angles around us
    1. Identifying Angles Around Us

1.

Measuring Angles

  • 1. Measuring Angles with a Protractor

1.1.

Measuring Angles with a Protractor

The workspace below is a good way to get used to measuring angles with a protractor.[br][br]1. Click on the 'New Angle' button.[br]2. Using the protractor, measure the size of the angle.[br]3. Enter the value and click on 'Check'.[br]4. Repeat the process several times to ensure that you understand how to use a protractor.
– John Christie, Ed Warkentin, Girish Belkar

2.

Categorizing Angles

  • 1. Categorizing Angles Practice

2.1.

Categorizing Angles Practice

[size=200][b][color=#0000ff]Grab any point with your mouse and move it to change the angle or the length of the sides of the angle. [/color][/b][/size]
[size=150][b][color=#0000ff]Move point C until the angle reads 90[/color][/b][math]^\circ[/math][b][color=#0000ff]. What type of angle is a 90[/color][/b][math]^\circ[/math][b][color=#0000ff]angle identified as?[/color][/b][/size]
[size=150][b][color=#0000ff]Move point C until the angle reads 180[/color][/b][math]^\circ[/math][b][color=#0000ff]. What type of angle is a 180 degree angle identified as? [/color][/b][/size]
Try it:
[size=150][b][color=#0000ff]An angle measures 83[/color][/b][math]^\circ[/math][b][color=#0000ff].  What type of angle is an 83 degree angle identified as?[/color][/b][/size]
[size=150][b][color=#0000ff]An angle measures 197[/color][/b][math]^\circ[/math][b][color=#0000ff].  What type of angle is a 197 degree angle identified as?[/color][/b][/size]
[size=150][b][color=#0000ff]An angle measures 90[/color][/b][math]^\circ[/math][b][color=#0000ff].  What type of angle is a 90 degree angle identified as?[/color][/b][/size]
[size=150][b][color=#0000ff]An angle measures 148[/color][/b][math]^\circ[/math][b][color=#0000ff].  What type of angle isa 90 degree angle identified as?[/color][/b][/size]
Identify the types of angles below.
Angle1
[size=150][b][color=#ff0000]How would you categorize angle 1?[/color][/b][/size]
Angle 2
[size=150][b][color=#ff0000]How would you categorize angle 2?[/color][/b][/size]
Angle 3
[size=150][b][color=#ff0000]How would you categorize angle 3?[/color][/b][/size]
Angle 4
[b][color=#ff0000][size=150]How would you categorize angle 4?[/size][/color][/b]
Angle 5
[size=150][b][color=#ff0000]How would you categorize angle 5?[/color][/b][/size]
– Judith Hilinski, ewegner, My Geometry Resources

3.

Identifying angles around us

  • 1. Identifying Angles Around Us

3.1.

Identifying Angles Around Us

Identify acute, right, obtuse, and straight angles while exploring everyday objects in this interactive activity.
Putting It All Together
[i]Answer these open ended questions on your own or with others to form deeper math connections. [/i]
Look around the area where you are sitting. Identify a type of angle you see and describe where you see it.
– GeoGebra Content Team

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