-1/2 x -1/7 I do not understand how to do this

Find the value of the variable and the length of each secant segment.

Which statement is true? the given sides and angles cannot be used to show similarity by either the sss or sas similarity theorems. the given sides and angles can be used to show similarity by the sss similarity theorem only. the given sides and angles can be used to show similarity by the sas similarity theorem only. the given sides and angles can be used to show similarity by both the sss and sas similarity theorems.

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin