C.
It represent everything that has to be done
A
2/9=9/2
-9/2=-2/9
9/2=2/9
-2/9=-9/2
Supplementary angles add up to 180 degrees, so look for two angles by each other that add up to 180 degrees.
Hope this Helps!
The number of a acute angle in a rectangle is 89 through 1 the obtuse angle in a rectangle is 91 through inf and a right angle of a rectangle is 90 degrees
The measure of and adjacent angle is less than the measure of the exterior angle
