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Angles (Grade 4)

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Which TWO statements about the angle shown are true?
160° Angle #1
  1. Angle ABC is acute.
  2. Angle ABC is obtuse.
  3. Angle ABC is less than [math]180deg.[/math]
  4. Angle ABC is equal to [math]180deg.[/math]
  5. Angle ABC is greater than [math]180deg.[/math]
What is the measure of angle ABC shown by the arrows?

You can use a protractor to help you find the answer.
270° Reflex Angle

The measure of angle [math]ABD[/math] is [math]90deg[/math]. The measure of angle [math]CBD[/math] is [math]30deg[/math].

Which equation can be used to find the value of angle [math]ABC[/math]?
Complementary Angle #2
  1. [math]ABC + 30 = 90[/math]
  2. [math]ABC - 30 = 90[/math]
  3. [math]ABC xx 30 = 90[/math]
  4. [math]ABC -:30 = 90[/math]
An angle is shown on the protractor.
Protractor 0° to 10°
Which statement about the angle is true?
  1. The angle is obtuse.
  2. The angle is equal to two 10-degree angles.
  3. The angle turns through ten 1-degree angles.
  4. The angle turns through [math]5/360[/math] of a circle that has a measure of 360 degrees.
Which angle has a measure of [math]80deg[/math]?

You can use a protractor to help you find the answer.
  1. 90° Angle #2
  2. 60° Angle #1
  3. 120° Angle #2
  4. 80° Angle #1
Which TWO statements about the angles shown are true?
Complementary Angle #1
  1. [math]DBC > ABC[/math]
  2. [math]DBC = ABC[/math]
  3. [math]DBC < ABC[/math]
  4. [math]DBC + ABC = DBA[/math]
  5. [math]DBC - ABC = DBA[/math]
Which THREE statements are true about the angles shown?
Supplementary Angle #1
  1. [math]ABC = 90deg[/math]
  2. [math]DBC = 90deg[/math]
  3. [math]DBA = 180deg[/math]
  4. [math]ABC = DBC[/math]
  5. [math]DBA = DBC + ABC[/math]
  6. [math]ABC = DBA - DBC[/math]
Which shows a right angle?

You may use a protractor to help you find the answer.
  1. 45° Angle #2
  2. 90° Angle #1
  3. 135° Angle #1
  4. Straight Angle
Angle A measures [math]15deg[/math]. Angle B measures [math]50deg[/math]. Which statement is true about the angles?
  1. Angle A turns through 15 1-degree angles.
  2. Angle B turns through 50 10-degree angles.
  3. Angle A turns through [math]15/180[/math] of a circle.
  4. Angle B turns through [math]50/180[/math] of a circle.
What is the measure of the angle shown on the protractor?
Protractor 0° to 130°

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