AB is parallel to QR- such that PA AQ - PB BR- PB -2 cm- EC -4 cm and QR -9 cm- then find the length of AB-

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Condition for Two Lines to Be Parallel

AB is paralle...

Question

$A B$ is parallel to $Q R$ , such that $\frac{P A}{A Q} = \frac{P B}{B R}$ . $P B = 2$ cm, $E C = 4$ cm and $Q R = 9$ cm, then find the length of $A B$ .

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