Answer:
Step-by-step explanation:
divide 360 by 2 with an outcome of 180 then multiply by 3
answer is 540
You can use CPCTC:
I would go with the third option; <span><em>AB and XY, AC and XZ, BC and YZ</em></span>
A=3 and B=1. comment if you would like me to explain how I did it.