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In the fiqure where PQRTU is a circle, ISTI = IRSI and angle TSR = 52o. Find the angle ...



In the fiqure where PQRTU is a circle, ISTI = IRSI and angle TSR = 52o. Find the angle marked m
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  • A 128o
  • B 52o
  • C 104o
  • D 64o
  • E 116o
Correct Answer: Option E
Explanation:
< STR = \(\frac{180 - 52}{2}\) = \(\frac{128}{2}\) = 64o

< PTR = 180 - < STR(angle on a straight line)

= 180 - 64 = 116o

< PQR + < PTR = 180(Supplementary)

< PQR + 118 = 180

< PQR = 180 - 118

= 64

M = 180 - < PQR

= 180 - < PQR = 180 - 64

= 116o

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