Balls
A cone.
Wich 3 D shape has a corner on it?
I think you can tell if a shape has a square corner by seeing if the corner has a 90 degree angle. If it is 90 degress than it is a square corner.
hexagon
A shape that has one corner is a cone.
Balls
A diagonal in a shape is a straight line from one vertex to another vertex (corner).
A cone.
Many 3d shapes have a corner.
Wich 3 D shape has a corner on it?
There is no such thing. For any shape, you can always imagine a shape that has one more corner.
triangle
four, one for each corner. If a corner is not a right angle, the shape is then called a rhombus.
Any shape with two lines meeting at an angle.
A diagonal.
The corner on a shape where edges meet is called a vertex.