Question

In the given figute, lines AB and CD intersect at
a point o. The sides CA and oB have been
produced to E and f respectively, such that...​

Answer 1

given lines AB and CD intersect at point O

ACOE are a triangle then A=y c=80 0=40

E is respectively to A E=x

the opposite to angles =x

theE=80+40=120

A and E is a srait line =180-120=A

A=60

and another triangle ODB and F is respectively to B O is common vertex then o= 40 and D = 70

F =y oD are opposite to F then F =40+70=110

F and B are srite line the a srite angle is 180°

then B=180-110=70

B =70°