Question

Marc is writing statements to prove that the sum of the measures of interior angles of triangle PQR is equal to 180o. Line m is parallel to line n.
Which is a true statement he could write?

Angle PRQ measures 45o.

Angle PQR measures 85o.


Angle PQR measures 40o.

Angle PRQ measures 50o.

Answer 1

thanks:)

Answer 2

Angle PRQ measures 50o.

Answer 3

this is correct i made a mistake previously

Answer 4

u can read about it here

http://en.wikipedia.org/wiki/Parallel_(geometry)