#### Topic Content:

- Basic Properties of Some Solid (3D) Figures
- Cuboid
- Cube
- Cylinder
- Cone
- Sphere
- Pyramid
- Triangular-based Prism

- Relationship between the numbers of Faces (F) Vertices (V) and Edges (E)

Solid figures are three-dimensional (3D) objects. What this means is solid shapes have width, depth, and height.

## Basic Properties of Some Solid 3D Figures:

### Faces, Edges, and Vertices of Solids:

**(i) Face: **A face is a flat surface. Faces can be square, rectangular or circular.

**(ii) Edge:** The edge of a solid figure is the line segment where two faces meet.

**(iii) Vertex:** The corners where the edges meet are called vertices.

### 1) Cuboid:

### Properties of Cuboid:

- A cuboid has 6 faces.
- A cuboid has 12 edges.
- A cuboid has 8 Vertices.
- It has rectangular faces.

**Examples:** Shoebox, cereal box, jewellery box

### 2) Cube:

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