Question

please all question solve

Answer 1

Let the angle BMN And the angle DNM be x and y respectively. => x+y =180°(interior angle property)  Now  Angle PMN =1/2x (angle bisected) And Angle PNM = 1/2y ( ||) Since x+y =180           1/2(x+y) = 90 Further angle PMN+PMN+MPN= 180                         1/2(x+y) +MPN=180                          90 +MPN = 180  MPN = 90°  Hence proved  Regards