Answer:
Its 60 60 60
Step-by-step explanation:
240 Divided by two makes two of the interior angles 60 therefore since triangles must have 180 degrees total the final angle must be 60 as well
z = 5
Here, I am using the 30 60 90 right triangle rule
7+3 = 2x
x = 5√3
Solution is given in attachment