I'm having trouble with this problem

How many diagonals can be drawn from one vertex of a regular decagon?

a.7

b.8

c.10

d.70

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- Mar 8th 2008, 01:22 PMRussianguy131517diagonals and decagon
I'm having trouble with this problem

How many diagonals can be drawn from one vertex of a regular decagon?

a.7

b.8

c.10

d.70 - Mar 8th 2008, 01:52 PMHenderson
There are ten vertices in a decagon; from one vertex you can draw a segment to any of the other nine vertices. Two of those segments are sides in the decagon, the other seven are diagonals.

- Mar 8th 2008, 02:24 PMLew Hartswick