Question

THE MOST IMPORTANT QUESTION OF CBSE 2020 CLASS 10TH MATHS. PLEASE SOLVE IT FAST ....... (standard)..​

Answer 1

Answer:

Smallest angle=120degrees

Common difference=5

A P is 120, 125, 130,..

The sum of interior angles of a polygon= (n-2)180

Hence Sum of n terms of an A P = (n-2)180

n/2 {2.120+(n-1)5} = 180(n-2)

5n2 -125n +720 = 0

n2 -25n +144=0

n=9 or 16

Hence number of sides can be 9 or 16

Answer 2

Answer:

Step-by-step explanation: