Complete the two-column proof.

Given:<2=<4, m<2= 110 degrees
Prove:m∠3 = 70º

<2=<4, m<2= 110 degrees Given
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
m∠3 = 70º d. ________

4 answers

damn 6 years later, and still no response

damn 6 years later, and the curriculum still hasn't changed
A. substitution property of equality, b. supplementary angles, and c. subtraction property of equality

(this might differ for everyone. i got full credit for this answer, but i cannot say for everyone)
Question is still the same this year too
its D. triangle angle sum theorem
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