Post a New Question

Geometry

posted by .

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.

  • Geometry -

    A pap

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question