To find the measure of angle GHK using the outer scale of a protractor, you would typically need the specific degree measures that rays HG and HK make with respect to a baseline (usually represented by the 0-degree line on the protractor).
If we assume you have the angle measures from the protractor, let's denote them as follows:
- Ray HG goes through X degrees.
- Ray HK goes through Y degrees.
The measure of angle GHK can then be calculated as:
\[ \text{measure of angle GHK} = |Y - X| \]
If we needed to define it as the LARGER VALUE minus the SMALLER VALUE, we can say:
\[ \text{measure of angle GHK} = \text{max}(X, Y) - \text{min}(X, Y) \]
Please provide the specific degrees for rays HG and HK so that I can calculate the measure of angle GHK for you.