<h2><u>Given</u>:-</h2>
Let us assume the three angles to be angle 1, angle 2 and angle 3.
Angle 1 = 35°
Angle 2 = 120°
<h2><u>To</u> <u>find</u>:-</h2>
Angle 3.
<h2><u>Solution</u>:-</h2>

<h2><u>Step</u>-<u>by</u>-<u>step</u> <u>explanation</u>:-</h2>
We know that,

➪ ∠ 1 + ∠ 2 + ∠ 3 = 180°
➪ 35° + 120° + ∠ 3 = 180°
➪ 155° + ∠ 3 = 180°
➪ ∠ 3 = 180° - 155°
➪ ∠ 3 = 25°

<h2><u>To</u> <u>verify</u>:-</h2>
∠ 1 + ∠ 2 + ∠ 3 = 180°
✒ 35° + 120° + 25° = 180°
✒ 180° = 180°
✒ L. H. S. = R. H. S.


<span>The graph of a system of equations will intersect at more than 1 point sometimes. Because in some cases it can't intersect axis.</span>