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URGENT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

URGENT class=

Răspuns :

A ABC=ANxBC/2
linia mijlocie imparte inaltimea in doua parti egale
AQ=QN dar QN=PR, AQ=AN/2, PR=AN/2
 A BMP=A ABC-(A AMP+A PBC)
A AMP=AQxMP/2=(AN/2xBC/2)/2=A ABC/4
A PBC=PRxBC/2=(AN/2xBC)/2=a ABC/2
A BMP=25-(25/4+25/2)=25-75/4=25/4
Vezi imaginea CRISTINATIBULCA