1.若角1与角2是对顶角,且角1+角2=130°,则角1=65° ,角2=65°
2.若角1与角2互为邻补角,且角1-2角2=60°,则角1=120° ,角2=60°
3.若角1与角2是对顶角,角3与角2互补,角3=60°,那么角1=120°