Angles Quiz - CBSE Class 9 Mathematics

Free practice quiz: Angles (CBSE Class 9 Mathematics). 19 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is the measure of a right angle?

   1. 45 degrees
   2. 90 degrees
   3. 180 degrees
   4. 360 degrees
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   Answer: B. 90 degrees

   A right angle is defined as an angle that measures 90 degrees.

2. If one angle of a triangle is 60 degrees and another is 70 degrees, what is the measure of the third angle?

   1. 50 degrees
   2. 60 degrees
   3. 70 degrees
   4. 90 degrees
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   Answer: A. 50 degrees

   The sum of the angles in a triangle is 180 degrees. So, 180 - 60 - 70 = 50 degrees.

3. What type of angle can be formed by the hands of a clock at 3:00?

   1. Acute
   2. Right
   3. Obtuse
   4. Straight
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   Answer: B. Right

   At 3:00, the hour hand points at 3 and the minute hand points at 12 forming a right angle (90 degrees).

4. What is an angle's supplement if it measures 75 degrees?

   1. 105 degrees
   2. 90 degrees
   3. 165 degrees
   4. 75 degrees
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   Answer: A. 105 degrees

   The supplement of an angle is calculated as 180 degrees minus the angle's measure. Thus, 180 - 75 = 105 degrees.

5. What is the angle formed between the hour hand and minute hand of a clock at 6:00?

   1. 0 degrees
   2. 90 degrees
   3. 180 degrees
   4. 360 degrees
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   Answer: C. 180 degrees

   At 6:00, the hour hand points at 6 and the minute hand points at 12, creating a straight angle of 180 degrees.

More quizzes

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• Triangles

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