Concept 4 of 6
Faces, Edges & Corners
Today's big idea
A face is a flat side of a solid; a cube has 6 square faces.
A cube has 6 faces, 12 edges and 8 corners.
How it works
👀 What's going on?
The flat sides of a box are shapes you already know.
💡 Here's the trick
A face is a flat side of a solid, a corner is a sharp point, and an edge is where two faces meet. A cube has 6 square faces.
A cube has 6 faces, 8 corners and 12 edges, and every face is a square.
✍️ Try it
How many faces does a cube have? → 6.
⚠️ Watch out
A face is flat, so a sphere is fully round and has no flat faces.
Watch me solve one
Quanta solves it
“Watch how I think through one of these — then you try.”
THE PROBLEM
“How many faces does a cube have?”
- 1
A face is a flat side
Think of a dice.
- 2
Count them
Top, bottom, and 4 around the middle.
- 3
Add up
1 + 1 + 4 = 6 faces.
- 4
Answer ✓
6
Now you try one — same steps, different story 👇
See it in action
⚡ Time to play!
Tap each flat face you can see on the cube.
Visible faces tapped: 0 / 3
Quick check
✅ VERIFICATION
What flat shape is each face of a cube?
⚡ Finish the activity above first to answer.
Keep going!
Up next: Symmetry
One fold makes both halves land on top.