Question

15 the measure of the exterior angle of the triangle is

Explanation:

Step1: Apply the exterior angle theorem

The exterior angle theorem states that an exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles.
Let the exterior angle be \(\angle2\). The two non - adjacent interior angles are \(64^{\circ}\) and \(75^{\circ}\).

Step2: Calculate the measure of \(\angle2\)

$$
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$$

Answer:

\(139^{\circ}\)