>>12900385>>12900385Let R be the point on top(the one connected to P) and connect P and Q. Then from the triangle PRQ we have:
Angle PRQ = 90
From that we know that the angle ORQ = 90-35 = 55
Since the triangle ORQ is isosceles, we have that angle OQR is 55.
Thus y = 180 - (55+55) = 180-110 = 70.
The angle RPQ is half the angle y, since angle PRQ = 90 and angle RQP = 55, angle RPQ = 180 - (90+55) = 180 - 145 = 35 = y/2
