Sidee loo kala saaraa lawska rivet-ka yar ee la qalajiyey iyo lawska rivet-ka ee la qalajiyey ee waaweyn?

Lawska rivet-ka leh xagal 90 ° waa madax weyn oo ka soo horjeeda, halka lawska rivet-ka leh xagal 120 ° uu yahay madax yar oo ka soo horjeeda.

Farqiga u dhexeeya labada:
1. Xagasha madaxa way ka duwan tahay.
2. Dhexroorka dibadda ee madaxa waa ka duwan yahay.