## 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?

### Video Examples: Finding the coefficient of friction on a flat surface

### Solved Example on Flat Surface

**Ques: **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.