RSTU is a kite m
A. 120
B. 60
C. 80
D. 140

Answer:
B. 60
Step-by-step explanation:
a quadrilateral always adds up to 360°. so you add up all angles then subtract your sum from 360. 140+80=220, now add angle U which is a congruent angle to angle s so 220+80=300. now 360-300=60