Question

Two lines extend from point S to create a right angle. The vertical line extends from point S through point R. The horizontal line extends right from point S through point T. A third line extends right and up from point S through point U.
Which is another way to name AngleUST?

AngleTSR
AngleTSU
AngleUSR
AngleUTS

Answer 1

Angle TSU

Reason: Angle UST has vertex S, so any name with S in the middle and the same two rays (T–S–U or U–S–T) is the same angle.