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JRicardo · Answer 1 · 2023-09-17T16:39:07+0000

Answer:

35 diagonals

Explanation:

A regular decagon has 10 vertices and 35 diagonals. The diagonals of a decagon are found by using the formula n(n-3) ÷ 2, where n is a number of sides that is 10. So, 10(10-3) ÷ 2 = 35.

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