Question

m∠abc = 180° what type of angle is it? obtuse straight right acute

Explanation:

An angle of \(180^{\circ}\) is defined as a straight angle. An obtuse angle is greater than \(90^{\circ}\) but less than \(180^{\circ}\), a right angle is exactly \(90^{\circ}\), and an acute angle is less than \(90^{\circ}\). So, since \(m\angle ABC = 180^{\circ}\), it is a straight angle.

Answer:

B. straight