Question

Triangle ABC maps to triangle XYZ by a rotation of 90∘ counterclockwise about the origin followed by a reflection across the line y=x. In triangle ABC, m∠A=45∘, m∠B=55∘, and m∠C=80∘.
What is the measure of ∠Y?
Enter your answer as the correct value, like this: 42

Answer 1

Answer:123

Step-by-step explanation:

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Answer 2

Answer:

55

Step-by-step explanation: