Question

How many diagonals can be drawn by joining the vertices of an octagon?

Answer 1

20 diagonal

Step-by-step explanation:

thus for each of the 8 vertices you can draw 5 diagonal and hence you have

constructed 5×8 = 40 diagonals. but you have constructed each diagonal twice, once from each of it's ends. thus there are 20 in regular octagon.

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Answer 2

Answer:

5

Step-by-step explanation:

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