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2014-10-24T09:24:12+03:00

a)ABCD=ralelogram ⇒AB//CD⇒m(BAD)+m(ADC)=180 ⇒m(CDA)=180-60=120

ABCD=parallelogram⇒DAB≡DCB;ADC≡CBA⇒

m(DAB)=m(DCB)=60; M(ADC)=M(CBA)=120

b)abcd=parallelogram⇒(ad)≡(bc)⇒ad=bc=4cm cd=ab=6cm⇒p=12cm+8cm=20cm

foarte bine,dar poti sa-mi dai rezolvarea intreaga?
nu prea am timp
poti sa faci figura te rog?
o,bine,atunci mai astept
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