Question

find the diagnols of the regular decagon
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Answer 1

Answer:

35 diagonals

Step-by-step explanation:

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Answer 2

Answer :

35 diagonals .

Step by Step explanation :

Decagon = 10 sides polygon

So as it has 10 vertices , so , each vertices can start an arrow towards remaining 9 vertices . But 2 of those won't be called diagonals as those are sides . So each of the 10 vertices will 9 – 2 = 7 diagonals .

.Thus 10 × 7 = 70 diagonals

70 diagonalsBut 1 diagonal is between two vertices , so 1 diagonal has been counted twice in this calculation .

So actual diagonal count is : 70/2=35 .

= 35 diagonals .