how many diagonals are therw in a decagon drawn from a vertex?
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Answer:
a decagon has 10 vertices. Thus C(10,2)=10*9/2=45 lines can be drawn out which includes 10 sides. Hence number of diagonals of a decagon=45–10=35.
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Step-by-step explanation:
A decagon has 10 vertices. Thus C(10,2)=10*9/2=45 lines can be drawn out which includes 10 sides. Hence number of diagonals of a decagon=45–10=35.
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