Question

2. Find the number of sides of a polygon if
the sum of the interior angles is
a) 10 right angles
b) 720
c) 1620
d) 540°​

Answer 1

Answer:

we know that

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

let n =no . of sides in a polygon

a)

given , interior angles sum = 10 right angles

=10×90=900

(n-2)180=900

(n-2)=5

n=5+2

n=7 sides

b)

given , sum of interior anles = 720

(n-2)180=720

(n-2)=4

n=6 sides

c)

given , sum of interior angles =1620

(n-2)180=1620

(n-2) = 9

n=11 sides

d)

given, sum of interior angles = 540

(n-2)180=540

(n-2)=3

n=5 sides ..

hope it helps u a lot.☺

Answer 2

Answer:

the answers are in the photos above

Step-by-step explanation:

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