Proof: Triangle Sum Theorem 2     
P = x
R = 2x
S = (3/4)x
R = 96
1. 
1. 
R = 2 * 48; R = 96
x + 2x + (3/4)x = 180; (15/4)x = 180
R = 2x
P = x
S = (3/4)x
(4/15) * (15/4)x = (4/15) * (180); x = 48
P + R + S = 180



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