Question

If two adjacent angles of paralellogram is (10y-9) and (8y+45) .find the four angles of paralellogram

Answer 1

2(10y-9)+2(8y+45)=360
20y-18+16y+90=360
36y=270+18
y=288/36
y=8
1st and 3rd angle=71
2nd and 4th angle=19