Two angles are supplementary if the sum of their measures is 180 degrees .  if the measure of an angle is 6 x degrees, represent the measure of its supplement as an algebraic expression in x.

Step-by-step explanation:

if u have supplementary angles and 1 angle is 6x, then the other angle would be : 180 - 6x

180-6x

Step-by-step explanation:

Because the two angles would equal 180 added together then you would subtract the angle measure of one of the angles to be able to get the measurement of the supplement. Because an expression has no answer it simply represents what it would look like in an equation.

i belive those are the ones that are under 90 degreese.