Asked by DANIELLE
Given: in triangle ABC, angle B= 120 degrees
Prove: angle A does not= 60 degrees
Plan: use indirect proof
Assume temporarily that Measure angle A = 60. Then measure angle C=60,
and measure angles A+B+C=180= 60+B+60=180. Therefore the temporary assumption that measure angle A=60 is false. It fallows that measure angle A does not equal 60 degrees.
excellent.
Prove: angle A does not= 60 degrees
Plan: use indirect proof
Assume temporarily that Measure angle A = 60. Then measure angle C=60,
and measure angles A+B+C=180= 60+B+60=180. Therefore the temporary assumption that measure angle A=60 is false. It fallows that measure angle A does not equal 60 degrees.
excellent.
Answers
Answered by
Melanie
A pap
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