In the diagram, XY is a straight line. <POX = <POQ and <ROY = <QOR. Find the value of <POQ + <ROY.

  • A 60\(^o\)
  • B 90\(^o\)
  • C 100\(^o\)
  • D 120\(^o\)
waec 2017mathematics

The correct answer is B. 90\(^o\)

<POX = <POQ; <ROY = QOR

2 <POQ + 2 <ROY = 180

2(<POQ = <ROY) = 180

<POQ + <ROY = 90

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