Write a list of steps that I need to find the measure of <b

>angle A

1. Draw a diagram of the angle.
2. Identify the two lines that form the angle.
3. Measure the length of each line.
4. Use the formula for the measure of an angle (mA = (180° - (mB + mC)) to calculate the measure of angle A.
5. Substitute the measures of the other two angles into the formula and solve for mA.