it is the property of solid crystal that they have straight edges and flat faces.
all of its edges are straight
There are four straight edges in a square. All of them are parallel and congruent too.
No, all 6 edges of a hexagon are straight
Every shape that is round does not have edges. A shape that has sharp points and has straight lines can have edges.
it is the property of solid crystal that they have straight edges and flat faces.
Not all crystals have smooth edges. The only crystals that I think have smooth edges are water worn ones. So your answer is no.
all of its edges are straight
There are four straight edges in a square. All of them are parallel and congruent too.
No, all 6 edges of a hexagon are straight
Every shape that is round does not have edges. A shape that has sharp points and has straight lines can have edges.
Any shape with straight edges can have perpendicular edges.
They are straight lines.
A cylinder has no straight edges
It has 12 straight edges
Circle, Oval or sphere
a pyramid has 4 straight edges