PQ and RS are two lines that intersect at point T.

Question

anonymous · Answer

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anonymous · Answer

Which fact is used to prove that angle PTS is always equal to angle RTQ?  
Select one:
a. Sum of the measures of angles RTQ and QTS is 180°.
b. Lines PQ and RS intersect at an angle greater than a right angle.
c. Line segments PQ and RS do not have a fixed length.
d. Sum of the measures of angles PTR and QTS is 180°.

opcode · Answer

Well you can prove the are equal by using the Vertical Angles Theorem.
A step of Vertical Angles Theorem is A, Sum of the measures of angles RTQ and QTS is 180°?

anonymous · Answer

so the answer is A

opcode · Answer

Yes. You understand it is because of the Vertical Angles Theorem correct?

anonymous · Answer

@ganeshie8 is he correct

ganeshie8 · Answer

you will have to convince urself :)

anonymous · Answer

thnx opcope

opcode · Answer

No problem, I was glad I could help.