Number of diagonals of a convex hexagon is

3

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6

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9

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12

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Solution

The correct option is D $9$
$\Rightarrow$ Number of diagonals = $\frac{n (n - 3)}{2}$

$= \frac{6 (6 - 3)}{2}$

$= 3 \times 3 = 9$

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Question 9

A regular hexagon is inscribed in a circle of radius r. The perimeter of the regular hexagon is
(a) 3 r (b) 6 r (c) 9 r (d) 12 r

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