A+B = 180⁰ ; A-B = 50⁰50'50''
2·A = 180⁰+ 50⁰50'50'' = 230⁰50'50''
A = 230⁰50'50'' : 2 = > A =115⁰25'25''
B = 180⁰-115⁰25'25'' = 179⁰59'60''-115⁰25'25'' = > B = 64⁰34'35''
a si b masurile unghiurilor suplementare ⇒a+b=180°
a-b=50°50'50"⇒a=b+50°50'50" inlocuim pe a in suma
b+50°50'50"+b=180°⇒2b=180°-50°50'50"=179°59'60"-50°50'50"=129°9'10"
b=129°9'10"/2=128°68'70"/2=64°34'35" ; a=180°-64°34'35"=179°59'60"-64°34'35"=
115°25'25", verificare⇒115°25'25"-64°34'35"=114°84'85"-64°34'35"=50°50'50"
