Answer:
by the angle addition postulate, the size of angles RQS and TQS must sum to three angle TQR. S once angle TQR is a straight angle it measures 180°
6x+20+2x+4=180
8x+24=180
8x=156
x=39/2
angle TQS measures 6*(39/2)+20=137°
angle QSR measures 2*(39/2)=43°
if you add these you'll see they do sum to 180
Step-by-step explanation:
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