Răspunsuri

2014-07-11T12:24:18+03:00
2014-07-11T12:25:49+03:00
A) Δisoscel⇒ perimetru=2a+b= 2·5+10=20 cm
b)Δechilateral⇒perimetru=3·a⇔3·6=18 cm
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