[tex] m \angle1 + 68 \degree = 102 \degree\\m \angle1 = 102 \degree - 68 \degree \\ = 34 \degree \\ m \angle2 \: + 102 \degree = 180 \degree \\ m \angle2 \: = 180 \degree - 102 \degree \\ = 78 \degree \\ [/tex]
