/___ ___ ___ ___ ___ ___ ___ ___/
-----------------------------------------------
1intreg=8/8
1cop /___ ___ ___ ___/+0,5kg
2cop /___ ___/+0,5kg
3cop /___/+/___/
0,5kg
0,5kg---figureaza un segment
0,5kg+0,5kg+=1kg--prim.inca--1cop+2cop
0,5kgxde8ori(adica8segm)=4kg
4kg+1kg=5kg---erau in cos