Let statements p, q, r, and s be as follow:
p: angle a and angle b are a linear pair.
q: angle a and angle b are supplementary angles.
r: angle a and angle b are adjacent angles.
s: angle a and angle b are adjacent and supplementary angles.
substitute for p, q, r, or s, and write the statement below the way you would read it.
p > q
angle a and angle b are supplementary if and only if angle a and angle b are a linear pair
if angle a and angle b are a linear pair, then angle a and angle b are supplementary angles
if angle a and angle b are supplementary, then angle a and angle b are a linear pair
angle a and angle b are a linear pair if and only if angle a and angle b are supplementary