i think if all the angles near the edge are exactly 90 degrees or something like that
12
a cube has 12 edges, 6 faces and 8 vertices.
it has one obtuse angle and none of the sides are congrent
nothing
Four
8
square
A cube has 12 edges. An easy way to figure out how many edges is to multiply the number of edges of the original shape, a square(4)and multiply it by how many dimensions it has(3). To figure how many dimensions remember that to figure volume of a cube you multiply length X width X height, 3 dimensions.
isosceles
No.
One
12 edges.