There are 12 edges in a cube.
Each of the 12 edges of a cube is directly perpendicular to four others (two at each vertex for that edge).
24
24
none of them. The cube has parallel and perpendicular and os does the cuboid.
Yes
Yes
there are 12 edges in a cube
A cube has twelve edges.
There are 12 edges in a cube.
A cube has 12 edges.
the square root of the sum of the squares of three perpendicular edges.