Answer
x=60$^{\circ}$
$\angle$RST=30$^{\circ}$
Work Step by Step
$\angle$RST+$\angle$TSV=$\angle$RSV
$\frac{x}{2}$+$\frac{x}{4}$=45$^{\circ}$
3x=180$^{\circ}$
x=60$^{\circ}$
$\angle$RST=$\frac{60^{\circ}}{2}$=30$^{\circ}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.