Question

All of the following are equivalent except

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180 - m∠3
m∠2 + m∠6
180 - m∠7
m∠7 + m∠6

Answer 1

I think angles 3 and 7 are congruent because they're alternate interior angles, so choices 1 and 3 should be equal. The sum of the three angles in a triangle, in this case angles 2, 3, and 6, should equal 180, so 180 - angle 3 = angle 2 + angle 6. That leaves choice 4. Also, because the triangle isn't equilateral (at least, it isn't specified), choice 4 should not equal the other expressions.

Answer 2

thnx:) i was stuck on this question 4 like 4ever