The sum of the opposite angles is 180°
8z + 14z - 7 = 180°
22z = 180+7
22z = 187
z = 187/22
z = 8.5°
m∠U = 8z
m∠U = 8*8.5
m∠U = 68°
m∠S = 14z - 7
m∠S = 14*8.5 - 7
m∠S = 119 -7
m∠S = 112°
m∠T = 10z
m∠T = 10*8.5
m∠T = 85°
m∠R = 180 - 85
m∠R = 95°
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