Tentukan besar sudut yang belum diketahui, beserta penjelasannya contoh : x=... karena.....(contoh:sehadap,luar bersebrangan, dll) dengan....

[tex] {x}^{0} = {70}^{0} \\ \\ {y}^{0} = {180}^{0} - {50}^{0} = {130}^{0} \\ \\ {z}^{0} = {180}^{0} - ( {x}^{0} + {50}^{0}) \\ {z}^{0} = {180}^{0} - ( {70}^{0} + {50}^{0} ) \\ {z}^{0} = {180}^{0} - {120}^{0} = {60}^{0} [/tex]