Answer:
I think it is B, AB or CD and AB || CD
Step-by-step explanation:
Step 2: it should be P-2x, not +.
Hope this helped :)
3,3,2 these are the primes of 18
∠BDC=30, so ∠CBD + ∠BCD=180-30=150
ΔDBC is isosceles, so ∠CBD=∠BCD=half of 150=75
∠ABC=∠ABD-∠CBD=155-75=80
ΔABC is isosceles, so ∠ABC=∠ACB=80
∠BAC=180-80-80=20
