1. You have two slides to complete. 2. Use the protractor on the slide to measure all the possible angles. - remember to line up the vertex and the baseline - use the magnifying glass to zoom in to see the measurement clearly. 3. Measure the angle using the protractor on the slide. - double-check your measurement. 4. Use the and/or tool to mark and label your angle. 6. When you are done press to submit.