# Angles (Grade 4)

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## Angles

1.

Which TWO statements about the angle shown are true?

- Angle ABC is acute.
- Angle ABC is obtuse.
- Angle ABC is less than [math]180deg.[/math]
- Angle ABC is equal to [math]180deg.[/math]
- Angle ABC is greater than [math]180deg.[/math]

2.

What is the measure of angle ABC shown by the arrows?

You can use a protractor to help you find the answer.

You can use a protractor to help you find the answer.

3.

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]?

Which equation can be used to find the value of angle [math]ABC[/math]?

- [math]ABC + 30 = 90[/math]
- [math]ABC - 30 = 90[/math]
- [math]ABC xx 30 = 90[/math]
- [math]ABC -:30 = 90[/math]

4.

An angle is shown on the protractor.

Which statement about the angle is true?

Which statement about the angle is true?

- The angle is obtuse.
- The angle is equal to two 10-degree angles.
- The angle turns through ten 1-degree angles.
- The angle turns through [math]5/360[/math] of a circle that has a measure of 360 degrees.

5.

Which angle has a measure of [math]80deg[/math]?

You can use a protractor to help you find the answer.

You can use a protractor to help you find the answer.

6.

Which TWO statements about the angles shown are true?

- [math]DBC > ABC[/math]
- [math]DBC = ABC[/math]
- [math]DBC < ABC[/math]
- [math]DBC + ABC = DBA[/math]
- [math]DBC - ABC = DBA[/math]

7.

Which THREE statements are true about the angles shown?

- [math]ABC = 90deg[/math]
- [math]DBC = 90deg[/math]
- [math]DBA = 180deg[/math]
- [math]ABC = DBC[/math]
- [math]DBA = DBC + ABC[/math]
- [math]ABC = DBA - DBC[/math]

8.

Which shows a right angle?

You may use a protractor to help you find the answer.

You may use a protractor to help you find the answer.

9.

Angle A measures [math]15deg[/math]. Angle B measures [math]50deg[/math]. Which statement is true about the angles?

- Angle A turns through 15 1-degree angles
- Angle B turns through 50 10-degree angles
- Angle A turns through [math]15/180[/math] of a circle.
- Angle B turns through [math]50/180[/math] of a circle.

10.

What is the measure of the angle shown on the protractor?

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