** Definition of Flat Surface**

- A plane horizontal surface with no depths is called a Flat Surface.

**Example of Flat Surface**

- How many flat surfaces are there in this figure?

There are 5 flat surfaces in this figure.

**Solved Example on Flat Surface**

How many flat surfaces are there in this figure?

Choices:

A. 6

B. 5

C. 7

D. 4

Correct Answer: A

Solution:

Step 1:There are 6 planes or flat surfaces in this figure.

**Related Terms for Flat Surface **

- Geometric Solid
- Solid