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OpenStudy (anonymous):
Triangle RTS is similar to RDC. In the figure below, we are given RT = 12 DT = 4 RS = 9 CS = 3 Prove that ST and CD are parallel.
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OpenStudy (anonymous):
OpenStudy (id21):
TR/DR=12/16=3/4 SR/CR=9/12=3/4 Angle DRC is joint angle So criterion SAS -> these triangles are similar with ratio 3:4 and ST || DC
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