UNDERSTANDING SHAPES CLASS 8

Identify the curve.

• closed curve

• Open curve

• simple closed Curve

If there is a n-sided polygon , we can split it into how many Triangles ?

• n

• n-1

• n-2

• n-3

Which statement is incorrect for a regular polygon ?

• All Sides are equal

• All Interior angles are equal

• All Diagonals are equal

• All Exterior Angles are Equal

If there are 13 Sides in a polygon , Then the sum of All interior Angles is ?

• 1440⁰

• 1980⁰

• 180⁰

• 360⁰

If there is polygon with 12 sides , then the sum of all its exterior angles is equal to ?

• 1440⁰

• 180⁰

• 360⁰

• 2160⁰

State True or False :

Rhombus is an Regular Polygon

• True

• False

What is the sum of the exterior angles of an octagon?

• 360°

• 480°

• 600°

• 720°

Each interior angle of an n-sided regular polygon is equal to ?

• (n-2)x 180⁰ / n

• (n-2) x 180⁰

• (n-2)

• n

Sum of all Interior Angles of n-sided polygon is ?

• (n-2) x 180⁰

• (n-4) x 180⁰

• (n-2)

• none of the above

Each Exterior Angle of n-sided regular polygon is ?

• 360⁰ / n

• 420⁰

• 1450⁰

• none of the above