What is the sum of interior angles of a polygon of n sides?

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

(2 n - 1)

(2 n - 2)

(2 n - 3)

(2 n - 4)

answer is D.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

We need to find the sum of interior angles of a polygon of n sides.
The mathematical relation for the sum of all the interior angles of a polygon with ‘n’ sides is given as follows,

n − 2 × 180 °

Now, if we multiply and divide by 2, in the above relation, we get,

22 × n − 2 × 180 ° = 2 (n − 2) 180 ∘ 2 = (2 n − 4) 90 ∘

Now, as we know that an angle measure of

90 ∘

is also known as a right angle, so we can rewrite the above relation as follows,

(2 n − 4) ×

right angles.
Hence, the sum of interior angles of a polygon of n sides

(2 n - 4)

right angles.
Hence, the correct option is (4).

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Get Expert Academic Guidance – Connect with a Counselor Today!

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th