Verified Answer :

Angles on a straight line add up to 180 so take 91 away from  180 to give you 89 i guess ^^; i hope that helps somewhat

Line \(\bar{DG}\) is a straight line, that means that it its angle is \(180˚\).  That means 2 angles must add up to \(180˚[tex].  This is called the complementary angle property.  An example is below as an image.

If the two angles must add up to [tex]180˚\)
, and one is \(92˚\), you can find \(\measuredangleJAR\) by doing:

180-92=

[tex]88˚/tex]