18 triangles
98
The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.
The number of triangles that can be formed within a regular polygon depends on the number of sides the polygon has. For an n-sided polygon, where n is greater than or equal to 3, you can form n-2 triangles within the polygon. This is because each triangle is formed by connecting one vertex to any other two non-adjacent vertices. So, for example, in a regular pentagon (5-sided polygon), you can form 5-2 = 3 triangles.
It can have 5 triangles
12
Two triangles can be formed by the diagonals of one vertex of a four-sided polygon.
98
98
It is: 8 because 8 triangles make up a 10 sided polygon
The number of triangles formed by the diagonals of a 21 sided polygon is C(21,3) = 21x20x19/3x2x1 = 1,330.
The number of triangles that can be formed within a regular polygon depends on the number of sides the polygon has. For an n-sided polygon, where n is greater than or equal to 3, you can form n-2 triangles within the polygon. This is because each triangle is formed by connecting one vertex to any other two non-adjacent vertices. So, for example, in a regular pentagon (5-sided polygon), you can form 5-2 = 3 triangles.
To determine the number of triangles that can be formed within a 13-sided polygon, we can use the formula nC3, where n is the number of vertices in the polygon. In this case, n = 13. So, 13C3 = 286 triangles can be formed within a 13-sided polygon.
13 triangles will be formed
there are 15 triangles in a 17 sided polygon
Well, honey, a 19-sided polygon can have a maximum of 646 triangles. But let's be real, counting all those triangles is about as fun as watching paint dry. Just trust me on this one, there are 646 triangles in that bad boy.
A 30 sided polygon contains 28 triangles.
There are 3 triangles inside a 5 sided pentagon polygon