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14. DCE = ABD =75

15. Dik :
TS = 10 cm
PS = 16 cm
QS = 6 cm
PQ = 16-6 = 10 cm

Dit : PQ?

[tex] \frac{rq}{ts} = \frac{pq}{ps} \\ \frac{rq}{10} = \frac{10}{16} \\ \frac{rq}{10} = \frac{5}{8} \\ 8rq = 50 \\ rq \: = \frac{50}{8} \\ rq = 6.25[/tex]