Narysuj wysokosc opuszczona na wyrozniony bok.Zmierz ja i oblicz pole trujkata
a) bok 4 cm a wysokosc 3,5 cm
b) bok 3 1/2 cm h= 2,5
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a- bok = 4cm
h-wysokość= 3.5 cm
Ptrójkąta= 1/2a*h
P= 1/2*4* 3.5
P= 7 cm^2
a= 3 1/2
h=2.5
P= 1/2* 3 1/2* 2.5
P=4.375 cm^2