Prove that the sum of the three angles of a triangle is `180^0dot`

Explanation

To prove that the sum of the three angles of a triangle is \(180^\circ\), we can follow these steps:

### Step-by-Step Solution:

1. **Draw Triangle**: Start by drawing a triangle \(ABC\). Label the angles as follows:
- Angle at vertex \(A\) as \(\angle A\)
- Angle at vertex \(B\) as \(\angle B\)
- Angle at vertex \(C\) as \(\angle C\)
...