cube
That 3D shape is called triangular pyramid.
They are called a Vertices and it is where 2 edges meet.
cube
cube
A 3D shape that has 6 edges is called a hexagonal prism.
A cylinder has 2 parallel circular edges
corners of a 3d shape
A pentagonal prism has 15 edges
A cube
A cube
A circle
triangular prism
Sphere
Spherical
It has 12 edges and 6 faces
Tweleve