Question

Find la xbifa-1-7)+7k and 5 – 31-23 +2.
(A) 19
(B) 10,5
(C) 19,5
(D) 93​

Answer 1

Answer:

per diagram l∣∣m and n transversal.

We know that vertically opposite angles are equal

a=110o ----(1)

d=85o  ----(2)

We also know that corresponding angles are equal.

a=b

d=c

=>a=b=110o  [ from (1)] 

=>d=c=85o   [ from (2)]