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The formula for determining the number of diagonals in a shape is n(n-3)/2 where n=vertices, (corners or intersections of geometric shapes). For an eight sided shape we replace n with 8. 8(8-3)/2 8(5)/2 (8x5)/2 40/2=20 An octagon contains 20 diagonals. For a further example we can determine the diagonals in a shape with 5 sides: 5(5-3)/2 5(2)/2 (5x2)/2 10/2=5 A Pentagon contains 5 diagonals.
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How many side does a octagon with 35 diagonals have?
An octagon has 8 sides and 20 diagonals so the question doesn't make sense
How many diagonals does an octahedron have?
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.
How many sides is an octagon shape?
8
How many triangles will be formed if you draw diagonals from a single vertex of a convex polygon with 8 sides?
It is: 8-2 = 6 triangles
A polygon with 16 sides has how many diagons?
(8*15)-16=104 diagonals in a 16 sided polygon.
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