Question

How many edges does an octahedron have?

Answer 1

Hi, lets start with the 2D shapes in this net. What shapes do you use to make an octahedron?

Answer 2

I got it, it was 12 (:

Answer 3

Okay.

Answer 4

Remember an edge is simply where faces intersect in a figure. Something I always do when I am dealing with solid figures is print out a net of the figure and fold it up to create the figure so I can then count the edges. It also works for faces and verticies if you do this too.

Answer 5

Oh okay thanks