3 years ago

Find the number of diagonals of a polygon of 13 sides.

Mathematics

2 answers:

aleksley [76]3 years ago

7 0

Answer:

Step-by-step explanation:

13(13-3)/2 = 65 diagonals.

Alex17521 [72]3 years ago

7 0

N(n-3)/2 is the number of diagonals. Explain in words why this works. A 13-gon would have 13(13-3)/2 = 65 diagonals.

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