# Geometry Practice Test on Angles | Basic Geometry Questions on Angles with Answers

Test your knowledge on angles by solving the questions shown in this article. In the previous articles, we have discussed deeply the geometry of angles such as acute angle, right angle, obtuse angle, supplementary angle, and complementary angles. Students of 5th grade are advised to check out the Geometry Practice Test on Angles and solve them. With the help of these geometry practice tests, the students can know in which topic they are lagging and overcome the difficulties in them.

## Geometry Practice Test on Angles with Answers PDF

Question 1.
Measure the below angles by using a protractor.
i. 75Â°
ii. 95Â°
iii. 110Â°
iv. 170Â°
v. 45Â°

Solution:
i. 75Â°

ii. 95Â°

iii. 110Â°

iv. 170Â°

v. 35Â°

Question 2.
An angle whose measure is greater than 90Â° is called ____

An angle whose measure is greater than 90Â° is called Obtuse Angle.

Question 3.
An angle whose measure is equal to 90Â° is known as ______

An angle whose measure is equal to 90Â° is known as the Right Angle.

Question 4.
Classify the following angles
i. 55 degrees
ii. 180 degrees
iii. 35 degrees
iv. 60 degrees
v. 40 degrees

Solution:
i. 55 degrees:
An angle that is less than 90 degrees is known as the acute angle.
55Â° < 90Â°
Thus 55Â° is an acute angle.
ii. 180 degrees
180 degrees is a straight angle.
iii. 35 degrees
An angle that is less than 90 degrees is known as the acute angle.
35Â° < 90Â°
Thus 35Â° is an acute angle.
iv. 60 degrees
An angle that is less than 90 degrees is known as the acute angle.
60Â° < 90Â°
Thus 60Â° is an acute angle.
v. 40 degrees
An angle that is less than 90 degrees is known as the acute angle.
40Â° < 90Â°
Thus 40Â° is an acute angle.

Question 5.
Find the complement of the given angles.
i. 75Â°
ii. 89Â°
iii. 67Â°
iv. 53Â°
v. 71Â°

Solution:
i. 75Â°
If the sum of two angles is equal to 90Â° then that angle is known as the complementary angle.
90Â° – 75Â° = 15Â°
Thus the complement of the given angle = 15Â°
ii. 89Â°
If the sum of two angles is equal to 90Â° then that angle is known as the complementary angle.
90Â° – 89Â° = 1Â°
Thus the complement of the given angle = 1Â°
iii. 67Â°
If the sum of two angles is equal to 90Â° then that angle is known as the complementary angle.
90Â° – 67Â° = 23Â°
Thus the complement of the given angle = 23Â°
iv. 53Â°
If the sum of two angles is equal to 90Â° then that angle is known as the complementary angle.
90Â° – 53Â° = 37Â°
Thus the complement of the given angle = 37Â°
v. 71Â°
If the sum of two angles is equal to 90Â° then that angle is known as the complementary angle.
90Â° – 71Â° = 19Â°
Thus the complement of the given angle = 19Â°

Question 6.
Which of the following pairs are the supplementary angles.
A. 117Â°, 63Â°
B. 150Â°, 30Â°
C. 111Â°, 90Â°
D. 124Â°, 54Â°

Solution:
A. 117Â°, 63Â°
If the sum of two angles is equal to 180Â° then it is known as supplementary angles.
117Â° + 63Â° = 180Â°
B. 150Â°, 30Â°
150Â° + 30Â° = 180Â°
C. 111Â°, 90Â°
111Â° + 90Â° = 201Â°
D. 124Â°, 54Â°
124Â° + 54Â° = 178Â°
Thus the correct answer is option A and B.

Question 7.
Which of the following pairs are the complementary angles.
A. 17Â°, 63Â°
B. 10Â°, 80Â°
C. 11Â°, 70Â°
D. 26Â°, 54Â°

Solution:
A. 17Â°, 63Â°
17Â° + 63Â° = 80Â° â‰  90Â°
B. 10Â°, 80Â°
10Â° + 80Â° = 90Â°
C. 11Â°, 70Â°
11Â° + 70Â° = 81Â° â‰  90Â°
D. 26Â°, 54Â°
26Â° + 54Â° = 80Â° â‰  90Â°
Thus the correct answer is option B.

Question 8.
Identify the given angle by using a protractor.

Solution:
By seeing the above figure we can say that it is a right angle. Because an angle whose measure is equal to 90 degrees is known as a Right angle.

Question 9.
Use the protractor to draw the following angles.
i. 81Â°
ii. 100Â°
iii. 60Â°

Solution:
i. 81Â°

ii. 100Â°

iii. 60Â°

Question 10.
Find the supplementary of the given angles.
i. 115Â°
ii. 178Â°
iii. 136Â°
iv. 180Â°
v. 90Â°

Solution:
i. 115Â°
The sum of angles = 180Â°
180Â° – 115Â° = 65Â°
Thus the supplement of the given angle is 65Â°
ii. 178Â°
The sum of angles = 180Â°
180Â° – 178Â° = 2Â°
Thus the supplement of the given angle is 2Â°
iii. 136Â°
The sum of angles = 180Â°
180Â° – 136Â° = 44Â°
Thus the supplement of the given angle is 44Â°
iv. 180Â°
The sum of angles = 180Â°
180Â° – 180Â° = 0Â°
Thus the supplement of the given angle is 0Â°
v. 90Â°
The sum of angles = 180Â°
180Â° – 90Â° = 90Â°
Thus the supplement of the given angle is 90Â°

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