complete the paragraph proof given: <1 and <2 are supplementary and <2 and <3 are supplementary Prove: <1 is congruent to <3By the definition of supplementary angles, M<1+M<2=? M<2+M<3=?M<1+M<2=M<2+M<3subtract M<2 from each side, You get M<1=? or <1is congruent to? Please help I do not understand this at all, all help is greatly appreciated!
