Angle RSU is complementary to angle UST. Angle QSR is congruent to angle RSU. Lines Q, R, U, and T extend from point S from left to right. Angle R S T is a right angle. Which statement is true about angles UST and QSR? They are complementary. They are supplementary. They are congruent. They are obtuse.

Bbecause i need points 

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.