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Ajutatima! Fie rombul ABCD.Determinati AB+AD,CD+CB,AC+CA,,BC+CD+DA

Răspuns :

[tex]\it Fie\ \ell\ lungimea\ laturii\ rombului.\\ \\ AB+AD = \ell+\ell=2\ell \\ \\ CD+CB = \ell+\ell=2\ell \\ \\ AC+CA=AC+AC=2AC\\ \\ BC+CD+DA = \ell+\ell+\ell=3\ell[/tex]