Explore 3D shapes like boxes and balls — counting their faces, edges, and corners, and picturing what they look like unfolded.
A 3D shape has faces (the flat or curved surfaces), edges (where two faces meet), and corners or vertices (where edges meet at a point).
How many faces does a cube have?
6 faces
How many corners does a cube have?
8 corners
If you carefully unfold a 3D shape and flatten it out, you get its net — a 2D pattern that can be folded back up into the original shape.
If you unfold a cube completely flat, how many squares does the net have?
6 squares
A cylinder has two circular faces and one curved surface. If you unfold it, what shape does the curved part become?
A rectangle
1. How many edges does a cube have?
2. How many faces does a cuboid (like a matchbox) have?
3. How many faces does a cone have?
4. How many corners does a cuboid have?
5. Does a sphere (like a ball) have any edges or corners?