Which one of the following is a wrong statement? 1. Θ(n) +O(n) = Ω(n) 2. O(n) + Ω(n) = Θ(n) 3. Θ(n) + Ω(n) = Ω(n) 4. f(n) = O(g(n)) implies g(n) = Ω(f(n))

1. 2. ∠b and ∠y are right angles. 3.? 4.? which two statements are missing in steps 3 and 4? ∠x ≅ ∠c △abc ~ △zyx by the sas similarity theorem. ∠b ≅ ∠y △abc ~ △zyx by the sas similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem. = 2 △abc ~ △zyx by the sss similarity theorem.