Mathematics, 06.12.2020 20:40 mova1o
Daniela began a plan for this proof.
Since ∠1 and ∠2 are supplementary and ∠2 and ∠3 are supplementary, then m∠1+m∠2=180° and m∠2+m∠3=180°. If she can get m∠1 and m∠3 to both equal the same expression, she can use the transitive property of equality to set them equal to each other.
How can Daniela get m∠1 and m∠3 to both equal the same expression?
A) She can subtract m∠2 from both sides of m∠1+m∠2=180° and m∠2+m∠3=180°.
B) She can subtract m∠1 from both sides of m∠1+m∠2=180°, and subtract m∠3 from both sides of m∠2+m∠3=180°.
C) She can subtract 180° from both sides of m∠1+m∠2=180° and m∠2+m∠3=180°.
D) She can measure m∠1 and m∠3 with a protractor.
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Daniela began a plan for this proof.
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