Răspunsuri

2014-05-12T12:33:59+03:00
AB=60
BC=CA

P=AB+BC+CA=240
60+CA+CA=240
2xCA=240-60
2xCA=180
CA=180:2
CA=90 => CB=90
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2014-05-12T12:34:28+03:00
Notam cu a, b, c lungimile laturilor, a=60, b=c, P=a+b+c=240
60+b+b=240
2b=180, b=90, c=90

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