An octagon
An octogon contains 6 equilateral triangles.
There are 6 triangles
6 polygon triangles make a hexagon
To determine the number of triangles in a polygon, we can use the formula n(n-1)(n-2)/6, where n is the number of sides of the polygon. For a 26-sided polygon, the formula would be 26(26-1)(26-2)/6. Simplifying this expression, we get 262524/6 = 10400 triangles.
4 triangles make 1 hexagon. (easy way to find out how many triangles there are in a polygon- take number of sides of the polygon, subtract 2 from it, that's your answer!)
there are 15 triangles in a 17 sided polygon
It is: 8-2 = 6 triangles
It has 58 triangles
Triangles are one type of polygon
A 30 sided polygon contains 28 triangles.
There are 3 triangles inside a 5 sided pentagon polygon
In general, you divide up the polygon into triangles, calculate the areas of the triangles and then sum these.