State whether true (T) or false (F) :
A cube has 8 edges .

Answer

To determine whether the statement "A cube has 8 edges" is true or false, we can analyze the properties of a cube step by step.

### Step-by-Step Solution:

1. **Understand the Structure of a Cube**:
- A cube is a three-dimensional shape with six square faces.

2. **Identify the Components of a Cube**:
- A cube has:
- **Vertices**: Points where the edges meet.
- **Edges**: Line segments where two faces meet.
- **Faces**: The flat surfaces of the cube.

3. **Count the Edges**:
- Each face of the cube is a square, and each square has 4 edges.
- However, each edge is shared between two faces.

4. **Calculate the Total Number of Edges**:
- A cube has 6 faces, and since each edge is shared, we can count the edges:
- The edges can be counted as follows:
- 4 edges on the top face.
- 4 edges on the bottom face.
- 4 vertical edges connecting the top and bottom faces.
- Total edges = 4 (top) + 4 (bottom) + 4 (vertical) = 12 edges.

5. **Conclusion**:
- Since a cube has 12 edges, the statement "A cube has 8 edges" is **false**.

### Final Answer:
- The statement is **False (F)**.