find the number of a diagonal on a polygon of 20 side
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We can use the formula n(n-3)/2 where n is the number of sides of the polygon.
Since this polygon has 20 sides, the number of diagonals= 20(20-3)/2
= 20*17/2
= 340/2= 170
This polygon will have 170 diagonals.
Hope it helps u...pls mark as brainliest...
Since this polygon has 20 sides, the number of diagonals= 20(20-3)/2
= 20*17/2
= 340/2= 170
This polygon will have 170 diagonals.
Hope it helps u...pls mark as brainliest...
mahi186:
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