If a triangle has two angles measuring 50° and 60°, what is the measure of the third angle?

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Multiple Choice

If a triangle has two angles measuring 50° and 60°, what is the measure of the third angle?

Explanation:
The important idea is that the three interior angles in any triangle add up to 180 degrees. If two angles are 50° and 60°, their sum is 110°. Subtracting from 180° gives 70°. So the third angle measures 70°. The other options would make the total exceed or fall short of 180°, which isn’t possible for a triangle.

The important idea is that the three interior angles in any triangle add up to 180 degrees. If two angles are 50° and 60°, their sum is 110°. Subtracting from 180° gives 70°. So the third angle measures 70°. The other options would make the total exceed or fall short of 180°, which isn’t possible for a triangle.

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