Proof: Similar Triangles 4     
PQ = 6
QR = 6
SR = 4
P SQR
TS = 4
1. 
1. 
12 / 6 = TR / 4; 2 / 1 = TR / 4
8 = 4 + TS
PRT ~ QRS
PR = PQ + QR
R R
TR = 8
4 = TS
TR = SR + TS
PR / QR = TR / SR
SR = 4
PR = 6 + 6; PR = 12
QR = 6
PQ = 6
P SQR



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