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This printable supports Common Core Mathematics Standard 4.G.A.1.

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# Classifying Angles (Grade 4)

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## Classifying Angles

1.
Which of the following best describes the angle shown below?
1. right
2. acute
3. obtuse
4. straight

2.
Which of the following best describes the angle shown below?
1. right
2. acute
3. obtuse
4. straight
3.
Which of the following best describes the angle shown below?
1. right
2. acute
3. obtuse
4. straight

4.
Which of the following best describes the angle shown below?
1. right
2. acute
3. obtuse
4. straight
5.
In the figure below, $angABC$ would best be described as                .
1. right
2. acute
3. obtuse
4. straight

6.
In the figure below, $angDBA$ would best be described as                .
1. right
2. acute
3. obtuse
4. straight
7.
Which type of angle is $angACB$ in the triangle below?
1. right
2. acute
3. obtuse
4. straight

8.
Which type of angle is $angBAC$ in the triangle shown below?
1. right
2. acute
3. obtuse
4. straight
9.
Which type of angle is $angCBA$ in the parallelogram below?
1. right
2. acute
3. obtuse
4. straight

10.
All the angles in the hexagon shown below are                .
1. right
2. acute
3. obtuse
4. straight
11.
Name an obtuse angle shown on the figure below.

Name an acute angle shown on the figure below.

12.
Name an obtuse angle shown on the figure below.

Name an acute angle shown on the figure below.

13.
Name an obtuse angle shown on the triangle below.

Name an acute angle shown on the triangle below.

14.
Name an obtuse angle shown on the trapezoid below.

Name an acute angle shown on the trapezoid below.

15.
Identify each of the angles shown on the circle below as right, acute, obtuse, or straight.

$angCAD$

$angCAB$

$angDAO$

$angAOB$

$angBOD$

$angAOD$

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