Question

A polygon can be split into 17 triangles by drawing diagonals from one corner.
How many sides has the polygon?

Answer 1

Why u delete your post

Answer 2

It is 19, draw a few, u will see...

Answer 3

I have no idea where to even begin

Answer 4

is there not a universal formula ?

Answer 5

+2

Answer 6

oh instead of -2

Answer 7

Just look at the drawings, 2 vertices cannot reach...

Answer 8

sorry, but I dont understand

Answer 9

U can split all the polygon but there are always 2 vertices left (because they are next to the start vertex and u don't have to draw them)

So the sides is always +2

Answer 10

what are vertices?