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29 March, 13:33

How many diagonals can be drawn from a vertex of an octagon?

6

7

5

8

+3
Answers (1)
  1. 29 March, 13:39
    0
    Thus for each of the 8 vertices you can draw 5 diagonals and hence you have constructed 5 8 = 40 diagonals. But you have constructed each diagonal twice, once from each of its ends. Thus there are 20 diagonals in a regular octagon.
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