it is a decagon
How many straight edges does a cube have? It has 12 straight edges. It can be solved by drawing it out, or using Euler's Theorem. F+V=E+2 The number of faces is 6, and the number of vertices is 8, so 6+8=14. 14-2=12. So there are 12 straight edges in a cube.
Every hexagon has.
there are none
A cube has 6 square faces, 12 edges and 8 vertices
A regular octagon.
Any shape with straight edges can have perpendicular edges.
a circleA pedantic edit:Also an ellipse or a wriggly loop.Any shape that has no straight edges is described as a curvilinear shape.
A flat (2D) shape triangle has 3 straight edges. A triangular pyramid has 6 straight edges. A square pyramid has 8 straight edges. (Note, some vertical edges have already been counted as you move from one face to the next.)
Every shape that is round does not have edges. A shape that has sharp points and has straight lines can have edges.
This shape is a cube.
Overall
An ellipse is a shape that could be described as looking like 'a squashed circle.' With no straight edges, this shape is also called an oval.
hexagon
A pentagon
hexagon
Polyhedra.