Polygons Quiz - CBSE Class 7 Mathematics

Free practice quiz: Polygons (CBSE Class 7 Mathematics). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

Sample questions

1. What is a polygon?

   1. A shape with four sides
   2. A closed figure with straight sides
   3. A circle
   4. A 3D shape
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   Answer: B. A closed figure with straight sides

   A polygon is defined as a closed figure that is formed by joining straight line segments.

2. What is the name of a polygon with six sides?

   1. Hexagon
   2. Pentagon
   3. Heptagon
   4. Octagon
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   Answer: A. Hexagon

   A polygon with six sides is called a hexagon.

3. What is the exterior angle of a regular octagon?

   1. 45 degrees
   2. 30 degrees
   3. 40 degrees
   4. 60 degrees
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   Answer: A. 45 degrees

   The formula for calculating the exterior angle of a regular polygon is 360/n, where n is the number of sides. For an octagon, it's 360/8 = 45 degrees.

4. How many sides does a nonagon have?

   1. 7
   2. 8
   3. 9
   4. 10
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   Answer: C. 9

   A nonagon is a polygon that has nine sides.

5. What is the interior angle of a regular decagon?

   1. 144 degrees
   2. 120 degrees
   3. 150 degrees
   4. 135 degrees
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   Answer: A. 144 degrees

   The measure of interior angles of a regular polygon can be found using the formula [(n - 2) × 180]/n. For a decagon (10 sides), it's 144 degrees.

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