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Number of sides - 2

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Q: What is the formula for the number of diagonals from a vertex?
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What is the number of diagonals drawn from one vertex on a triangle?

The number of Diagonals in one vertex of a Triangle is 0 (zero)..


What can you say about the relationship of the number of diagonals that can be drawn from each vertex of a polygon?

The formula for the number of diagonals is: 0.5*(n^2-3n) whereas 'n' is the number of sides of the polygon


What statement can you make about the number of diagonals that can be drawn from one vertex in a polygon?

Number of sides minus two equals number of diagonals drawn from one vertex.


What rule can be used to find number of diagonals that can be drawn from one vertex of regular polygon?

You can use the formula D=S-2 where D is the number of possible diagonals and S is the number of sides the polygon has.


What is the diagonal of 16-gon from one vertex?

If you mean "How many diagonals can be drawn from one vertex of a figure with 16 sides", the formula is n-3, where "n" being the number of sides of the figure. So 16-3 = 13 diagonals that can be drawn from one vertex.


How many diagonals does a 8 sided polygon have?

An eight-sided polygon has 8 vertices. Consider1st vertex = 7 diagonals to other vertices2nd vertex = 6 diagonals to other vertices (since one has now been used)3rd vertex = 54th vertex = 45th vertex = 36th vertex = 27th vertex = 18th vertex = 0, so7+6+5+4+3+2+1 = 28Improved Answer:-Formula for finding diagonals of a polygon 0.5*(n2-3n) when n is the number of sides0.5*(82-24) = 20 diagonals


How many diagonals from a vertex of a heptagon?

how many diagonals from a vertex a heptagon have


How many diagonals per vertex does a pentagonal prism have?

The number of diagonals per vertices can be found by taking n(number of sides) minus 3, or n-3. Thus a pentagonal prism will have 5 sides per base, making the formula 5-3=2. There are 2 diagonals per vertex in a pentagonal prism. Source: My math teacher


What is the number of diagonals drawn from one vertex on a 13-gon?

There are 10 possible diagonals drawn from one vertex of the 13-gon which divide it into 11 nonoverlapping triangles.


How many diagonals can be drawn from one vertex of a polygon of 50 sides?

47 sides. Take a vertex of an n-sided polygon. There are n-1 other vertices. It is already joined to its 2 neighbours, leaving n-3 other vertices not connected to it. Thus n-3 diagonals can be drawn in from each vertex. For n=50, n-3 = 50-3 = 47 diagonals can be drawn from each vertex. The total number of diagonals in an n-sided polygon would imply n-3 diagonals from each of the n vertices giving n(n-3). However, the diagonal from vertex A to C would be counted twice, once for vertex A and again for vertex C, thus there are half this number of diagonals, namely: number of diagonals in an n-sided polygon = n(n-3)/2.


How many diagonals from one vertex in 16gon?

Using the formula 0.5(n^2 -3n) whereas n is number of sides, altogether there are 104 diagonals in a 16 sided polygon


How many diagonal can be drawn from a regular hexagon from one vertex?

5 diagonals * * * * * That is not correct since two of these would be lines joining the vertex to adjacent vertices (one on either side). These are sides of the polygon, not diagonals. The number of diagonals from any vertex of a polygon with n sides is n-3.