If line a and line b are parallel, which angles are vertical angles? 1.2
817
9 10
1413
11 12
16 15
C
4
A. 23 and 211
B. 28 and 23
C. 27 and 23
D. none of these

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.