Question

in an 8 sided polygon ,how many diagonals can we draw from a vertex to the opposite vertices
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Answer 1

Answer:

we can draw 4 diagonals

correct

Answer 2

Answer:

$\displaystyle\huge\red{\underline{\underline{AnSWer}}}$

a square (or any quadrilateral) has 4(4−3)/2 = 4×1/2 = 2 diagonals. an octagon has 8(8−3)/2 = 8×5/2 = 20 diagonals. a triangle has 3(3−3)/2 = 3×0/2 = 0 diagonals.