P is a point on one side of the straight line UV and P moves in the same direction as UV. If the straight line ST is on the locus of P and angle VUS = 50^\circ, find angle UST.
A
310°
B
130°
C
80°
D
50°
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
See Figure above.
Since ST is parallel to UV => angle< U = 50^\circ(alternate to Angle UST = 180^\circ - 50^\circ = 130^\circ (angle on a straight line)
Source: Myschool Past Questions Archive (Record #789)