Question

1. a triangle has interior angles measuring 80° and 70°. what is the measure of the third angle? 30° 20° 50° 40°

Explanation:

Step1: Recall the sum of interior angles of a triangle

The sum of the interior angles of a triangle is \(180^{\circ}\).

Step2: Set up the equation

Let the third - angle be \(x\). Then \(x + 80^{\circ}+70^{\circ}=180^{\circ}\).

Step3: Solve for \(x\)

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Answer:

\(30^{\circ}\)