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dau coroana. rog seriozitate maxima...... ​

Dau Coroana Rog Seriozitate Maxima class=

Răspuns :

Răspuns:

2.<A=<B=>∆ABCisoscel AC=BC

a)AC=6cm

b)AC+BC=11cm

BC=11/2=5,5cm

c)3BC=15 BC=15/3=5cm

2AC=2BC=2×5=10cm

d)AC=√5cm

2AC-BC=2√5-√5=√5cm