If 26=210 and 25= 27, which describes all the lines that must be parallel? S
56
8/7
t
1/2
43
9/10
u
13/14
12/11
16/15
O Only lines r and s must be parallel.
O Only lines t and u must be parallel.
O Lines r and s and lines t and u must be parallel.
O Neither lines r and s nor lines t and u must be parallel.