"Equations" may be a terrifying noun but it should not be. See how simple they are in ry1.
As we do mathematics we mostly ignore physics and units. Look at the joke about our math. prof. and understand.
Do not "overmathematics", the danger is to create the whole Universe from a dimensionless point.
Just read the protractor. It is something between 70 and 80 .
The angles COB and BOA are congruent but not equal. Their measures are equal but not their direction .
adjacent means lying near, close, or contiguous; adjoining .
In question 24 of our previous test we called "interior opposite angles" and now we refine our terminology .
The figure is proving the claim made there.
That the figure is on the plane is very important. There is at least 1.
Complementary angles are 2 angles whose whose measures add up to 90 degrees .
Supplementary angles are 2 angles whose whose measures add up to 180 degrees .
Alltogether they make 90 degrees .
All given says 6W = 180.
1 minute corresponds to 6 degrees.