Question

4 what is the measurement of the angle? choose the best estimate. 45° 180° 90°

Explanation:

Step1: Recall angle characteristics

An angle of \(45^{\circ}\) is a small acute angle. An angle of \(180^{\circ}\) is a straight - line angle. An angle of \(90^{\circ}\) is a right - angle (a square - cornered angle).

Step2: Estimate the given angle

The given angle is closer in appearance to a right - angle (\(90^{\circ}\)) than to \(45^{\circ}\) (which would be half of a right - angle in terms of "openness") and is not a straight line (\(180^{\circ}\)).

Answer:

\(90^{\circ}\)