◆ LINES AND ANGLES ◆
[tex]as \: shown \: in \: figure , \\ \\ angle \: 1 \: and \: angle \: 2 \: form \: linear \: pair \: , \\ \\ therefore \: \: , \\ \: \\ angle \: 1 \: \: + \: \: angle \: 2 = 180 \\ \\ given \: that \: angle \: 1 = 40 \\ \\ 40 + angle \: 2 = 180 \\ \\ angle \: 2 = 140 \: ans.[/tex]
