In the following sets, which set represents the angles of a triangle?

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Accepted Answer

The sum of the angles of a triangle is always 180°. Let's check each set:

1. {30°,60°,90°}: 30 + 60 + 90 = 180° ✔️
2. {80°,50°,90°}: 80 + 50 + 90 = 220° ✖️
3. {30°,50°,110°}: 30 + 50 + 110 = 190° ✖️
4. {30°,50°,90°}: 30 + 50 + 90 = 170° ✖️

Only the first set {30°,60°,90°} sums to 180°, so it represents the angles of a triangle.

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