Write down the number of faces of each of the following figures:
(i) Cuboid, (ii) Cube, (iii) Triangular prism, (iv) Square pyramid, (v) Tetrahedron

Answer

To find the number of faces for each of the given three-dimensional figures, we will analyze each shape step by step.

### Step-by-Step Solution:

1. **Cuboid**:
- A cuboid has 6 rectangular faces.
- **Count**: Top face, bottom face, and 4 lateral faces.
- **Total Faces**: 6

2. **Cube**:
- A cube is a special type of cuboid where all faces are squares.
- **Count**: Similar to a cuboid, it has a top face, bottom face, and 4 lateral faces.
- **Total Faces**: 6

3. **Triangular Prism**:
- A triangular prism has 5 faces.
- **Count**: 2 triangular faces (top and bottom) and 3 rectangular lateral faces.
- **Total Faces**: 5

4. **Square Pyramid**:
- A square pyramid has 5 faces.
- **Count**: 1 square base and 4 triangular lateral faces.
- **Total Faces**: 5

5. **Tetrahedron**:
- A tetrahedron consists of 4 triangular faces.
- **Count**: Each face is a triangle, and there are no other shapes involved.
- **Total Faces**: 4

### Summary of Faces:
- **Cuboid**: 6 faces
- **Cube**: 6 faces
- **Triangular Prism**: 5 faces
- **Square Pyramid**: 5 faces
- **Tetrahedron**: 4 faces