Place the protractor’s center point on the angle’s vertex
Align the protractor’s baseline with one ray of the angle
Check which scale starts at 0 on the aligned ray
Read the number where the other ray crosses the protractor
Use the correct scale if the protractor has two scales
For drawing an angle, mark the desired degree on the protractor
Draw a line from the vertex through the marked degree point
Remove the protractor and verify the angle if needed