Examine the diagram. It is not drawn to scale.

A triangle has angles 28 degrees, A, C. The exterior angle to the angle with a measure of 28 degrees is D, the exterior angle to angle A is B, the exterior angle to angle C is 125 degrees.

Choose the equation that cannot be used to find the measure of angle B.

m∠B = m∠C + 28°.

m∠B = 360° – (m∠D + 125°).

m∠B = 180° – m∠A.

m∠B = m∠D + 125°.

Angle is the space between the line or the surface that meets. And the angle is measured in degree. For complete 1 rotation, the angle is 360 degrees.

Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.

A triangle has angles of 28 degrees, A, and C. The exterior angle to the angle with a measure of 28 degrees is D, the exterior angle to angle A is B, and the exterior angle to angle C is 125 degrees.

Then angles ∠A and ∠B are supplementary angles. Then

∠A + ∠B = 180°

∠B = 180° – ∠A

More about the angled link is given below.

https://brainly.com/question/15767203