you subtract 3 from the number of sides then multiply that by the number of sides divided by 2
You can find the area of a diamond shape similarly to the way you find the area of a square except using the diagonals. All you have to do is multiply the diagonals to find the area.
Number of diagonals = 18*(18-3)/2 = 135
There are 2, according to the formula, diagonals of a shape = n(n-3)/2 where n is number of sides.
n(n - 3)/2. where n is the number of sides in the shape
Any quadrilateral (4-sided shape) has 2 diagonals.
If you a shape and you want to know how many diagonals it has, count it from corner to corner. Like, if this answer made it a bit easier for you to understand.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The number of diagonals will depend on the precise shape.
It depends on the shape. A square has no diagonals.Improved Answer:-A square has 2 diagonals in common with all other quadrilateralsThe formila is: 0.5*(n2-3n) = diagonals whereas n in the formula represents the number of sides the polygon or shape has
35 diagonals
You connect the points that it has, corner to corner and count them. Moo
The answer depends on whether the shape is 2-dimensional or 3-d. For a 2-dimensional polygon with n sides, the minimum number is n-3 diagonals.
5(5-3)/2. That it is the formula so that shape would have 5 diagonals. n(n-3)/2 where n is the number of sides