a. Given
b. Substitution
c. Addition Property of Equality
d. Subtraction Property of Equality
Complete the two-column proof.
Given: <2 ≅ <4, M<2=110°
Proof: m<3 = 70°
m∠2 = m∠4 Definition of congruent angles
m∠4 = 110º b. ________
∠3 and ∠4 are a linear pair Definition of a linear pair (shown in diagram)
∠3 and ∠4 are supplementary Linear Pair postulate
m∠3 + m∠4 = 180º c. _______
m∠3 = 70º d. ________
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