Răspuns :
I latura /-----/
II latura /-----/ } 10
III latura /-----/-----/-2
10 + 2 = 12
12 : 4 = 3 un segment egal
I latura = 3 cm
II latura = 3 cm
III latura = 3 x 2 - 2 = 6 - 2 = 4 cm
P = 3+3+4 = 10 cm
II latura /-----/ } 10
III latura /-----/-----/-2
10 + 2 = 12
12 : 4 = 3 un segment egal
I latura = 3 cm
II latura = 3 cm
III latura = 3 x 2 - 2 = 6 - 2 = 4 cm
P = 3+3+4 = 10 cm
P= l+l+l
l1+l2=l3+2cm...=>l1+l2>l3 cu 2cm
AB=AC
BC=(AB-1)+(AC-1)
AB=10:2-2
AB=5-2
AB=3cm
AC=3cm
BC=(3-1)+(3-1)
BC=2+2
BC=4cm
P=3+3+4
P=10cm
l1+l2=l3+2cm...=>l1+l2>l3 cu 2cm
AB=AC
BC=(AB-1)+(AC-1)
AB=10:2-2
AB=5-2
AB=3cm
AC=3cm
BC=(3-1)+(3-1)
BC=2+2
BC=4cm
P=3+3+4
P=10cm