Question 972876
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f=first angle; s=second angle=f; t=third angle=f+s=2f; 
g=fourth angle=2(f+s+t)-60=2(f+f+2f)-60=2(4f)-60=8f-60
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f+s+t+g=360 degrees Substitute for s,t and g.
f+f+2f+8f-60=360 degrees
12f=420 degrees 
f=35 degrees ANSWER 1: First angle is 35 degrees.
s=f=35 degrees ANSWER 2: Second angle is 35 degrees.
t=f+s=35+35=70 degrees ANSWER 3: Third angle is 70 degrees.
g=8f=8(35)-60=220 degrees ANSWER 4: Fourth angle is 220 degrees.