Complete the paragraph proof.
F
21 and 23 are congruent. In the figure, 21. and 22 form a linear pair. By the Linear Pair Postulate, 21 and 22 are
So, by the definition of supplementary angles, m/1 + m/2 = 180°. By the definition of congruent angles, m/1 = m/3 By the
Substitution Property of Equality,
So, by the definition of supplementary
GIVEN 21 = 23
PROVE 22 and 23 are
supplementary.
angles,