Proof: Similar Triangles 3     
line PQ line RS
QT = 8
RT = 4
ST = 3
PS = 9
1. 
1. 
PT = 6
PS = 6 + 3; PS = 9
3 / PT = 4 / 8; 3 / PT = 1 / 2
P S
ST / PT = RT / QT
RT = 4
QT = 8
ST = 3
PS = PT + ST
PTQ ~ STR
PTQ STR
line PQ line RS



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