Which of the following set of angles forms a triangle?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 I.e. 60°, 40°, 80°.
To form a triangle, The sum of all angles of a triangle must be equal to 180°
Option 1:
⇒ 60° + 70° + 80° > 180°
⇒ 210° > 180°
Option 2:
⇒ 60° + 70° + 30° < 180°
⇒ 160° < 180°
Option 3:
⇒ 60° + 40° + 80° = 180°
⇒ 180° = 180°
Hence, 60°, 40°, 80° is the set of angles that forms a triangle