B Q. 5. Lines PQ and RS intersect each other at O (seefigure). If POR: – InterviewSolution

1.	B Q. 5. Lines PQ and RS intersect each other at O (seefigure). If POR: RORS : 7, find all theangles a, b, c and d. Board Term I, 2012, Set-41
Answer» sum of all angles around a point = 360°a+b+c+d= 360°Let angle POR be 5x and angle ROQ be 7xSo, 7x+ 5x + 7x +5x = 360°this gives x=15°So, a= c = 7x = 105°and, b=d= 5x = 75°

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