## What is the flat surface of a solid figure?

face

The flat surface is called as a face of the solid and when 2 solids meet, they form an edge. Likewise, when 2 Edges meet, they form a point. So, we can conclude that the flat surface present on any solid is referred to as a face.

## How can you identify solid figures?

Solid figures are identified according to the features that are unique to each type of solid. Specifically, you can observe the numbers of faces, edges, and vertices, as well as the shape of the base. The flat surfaces of a solid figure are its faces, or sides as they are commonly called.

**Which figure has a flat surface?**

A face is one of the flat surfaces on a solid figure. A plane figure is a flat, two-dimensional figure.

**What is 3D solid figures with flat surfaces?**

There are 3D shapes that consist of only flat surfaces. For example, a cube, cuboid, pyramid and prism are all 3D shapes that are made up of flat surfaces. Their surfaces are squares, rectangles, triangles and parallelograms. None of them has a curved surface.

### What a flat surface is called?

A plane is a perfectly flat surface extending in all directions. If a surface is not flat, it is called a curved surface. The tool plane can be used to create a flat, level surface like the mathematical plane—hence the name. In geometry, a plane is made up of an infinite number of lines (or points).

### How many solid figures are there?

Answer: The major types of solid shapes are: cubes, cuboids, prisms, pyramids, platonic solids, torus, cone, cylinder, and sphere.

**What are the types of solid figures?**

Lesson Summary

- Rectangular prism – a solid figure that has six sides, called faces, that are rectangles.
- Cube – a solid figure that has six faces that are all squares of the same size.
- Cone – a solid figure that has a circular face on one end, called the base, and a point at the other end where the sides meet.

**What is meant by flat surface?**

A surface that is not curved.

#### What shape has no sides or corners?

A circle is a round shape that has no sides or corners.

#### What are flat shapes examples?

Some examples are:

- Circles. No sides. No angles. No vertices. Every point is the same fixed distance from the center of the circle.
- Squares. 4 straight sides. All sides are the same length. 4 vertices. 4 right angles (90 degree angles)
- Rectangles. 4 straight sides. 4 right angles. 4 vertices.

**Why are flat surfaces on solids called faces?**

Because a circle is a flat, plane shape, it is a face.