1. In the figure, TU is tangent to the circle at point U. Use the figure to answer the questions The measure of RS = 5 and ST = 4. What is the length of segment TU? Show each step.

(a)

rs x st = tu  2

(b)

yes it is possible the formula is in part a, but we're given just the side rt and st, not rs, but not to worry we can get rs with subtraction. we can do 9-4=5 for rs. now we can plug in our values to find tu

5x4 = tu  2

simplify with algebra  

20 = tu

FINAL ANSWER

GM, because when naming a line, you go from left to right just like how we read.