Understanding how to use a protractor to measure angles..

When measuring angles using a protractor, how do you decide whether to use the top scale or the botton scale?

© SolutionLibrary Inc. solutionlibary.com 9836dcf9d7 https://solutionlibrary.com/math/geometry-and-topology/understanding-how-to-use-a-protractor-to-measure-angles-3gk

Solution Preview

...

To measure an angle, put the vertex of the angle to be measured at the center of the straight side of the protractor, lining up one half of that side with one side of the angle, so that the other side is under the protractor. Choose the scale that starts on the side ...