Question

a,b,c,d patrulater m(a)= 1,25•m(c) , m(c) = 0,(6) •m(b) m(d)=0,1(6)•m(b). aflati masurile unghiurilor

Answer 1

a + b + c + d = 360°    c = 2/3 ·b        b = 3c/2     d = 1/6 ·3c/2 = c/4
1,25c + 1,5c + c + 0,25c = 360°
4c = 360°     c = 90°   a = 112°30'    b = 135°    d = 22°30'