Proof: Similar Triangles 4     

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

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ProveIt! by Michael Ferraro <mferraro@balstaff.org>.
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