how to find the periemeter when only two side measure is given
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of which polygon u r asking
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when we have two sides and third side not given we assume third side be x and add the sum of two side and in=we put the perimeter. For example-
we have the first side =12
2 side = 10
3 side=? so we assume third side = x
perimeter =100
the equation will be like this
12+10+x=100
22+x=100
x=100-22
x=78
by this process we get the third side=78.
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