How many diagonals can be drawn from one vertex of a 12 sided polygon.

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2 answers

Draw any convex polygon of n sides.

From any vertex, there are n-1 other vertices to reach. But two of those are adjacent, so a joining line is just a side.

That leaves n-3 other vertices. Joining to them will form diagonals.
HOW many diagonals are in ONE vertex on A 12 SIDED Polygon

this is 7th grade pre algebra!!

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