Please find the attached file for a proper understanding of the question given here. The diagram in the file attached is the complete accompanying diagram of the question.
As per that diagram, 
(which is given)
and we know that 
(vertically opposite angles).
Thus, the only way ΔDSB ≅ ΔTSR by SAS is when 
as indicated in the diagram.
Thus, is the correct answer.
B, D, E are appropriate choices.
_____
A ray can be named by its (one) end-point and any other point on the ray. Since there are an infinite number of points on the ray, it can be named an infinite number of ways.
You multiply 6ftx20ft then add 1 to it to get your answer
This is complicated because I’m typing on a phone, but
24:30 simplified is 4:5
30:54 simplified is 5:9
10:5 simplified is 2:1
5:15 simplified is 1:3
32:72 simplified is 4:9
72:104 simplified is 9:13
56:7 simplified is 8:1
7:63 simplified is 1:9
The answer is in the picture .:...
