Question

1. if a triangle has one angle of 45° and another of 60°, what is the degree measure of the third angle? 85° 65° 75° 70°

Explanation:

Step1: Recall the sum of angles in a triangle

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

Step2: Calculate the third angle

Let the third angle be \(x\). Then \(x + 45^{\circ}+60^{\circ}=180^{\circ}\).

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Answer:

\(75^{\circ}\) (the third option)