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Gyaan Maths
CBSE · Class 6-12
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CBSE Maths · Class 8

Chapter 11: Exploring Some Geometric Themes

Name: ________________________
Date: ______________
Marks: ____ / 5

Angles in polygons, tessellations, transformations.

Questions

  1. Sum of interior angles of pentagon.
  2. Interior angle of regular pentagon.
  3. Exterior angle sum of any polygon?
  4. How many sides if exterior angle 30°30°?
  5. Which transformation flips a shape?

Extra Practice (Optional)

  • [object Object]
  • [object Object]
  • [object Object]
  • [object Object]

Answer Key (For Teachers)

  1. Answer: 540°540°
    Working: 3⋅1803\cdot 180.
  2. Answer: 108°108°
    Working: 540/5540/5.
  3. Answer: 360°360°
    Working: Universal.
  4. Answer: 1212
    Working: 360/30360/30.
  5. Answer: Reflection
    Working: Mirror.
Gyaan Maths · CBSE Class 8 · Chapter 11
Gyaan Maths — CBSE Class 6-12, built for board-toppers.
v1.1 · Sept 2026