Solve this:
Q.11. Find :-
a) x + y + z


b) Find x + y + z + w

a.z=180-30=150x=180-90=90y=180-60=120x+y+z=150+90+120=360b.the fourth angle of the quadrilateral=360-50-80-120=110x=180-120=60y=180-80=100z=180-50=130w=180-110=70x+y+z+w=100+60+130+70=360Regards

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