Answer
m$\angle$ 1 = 124$^{\circ}$
Work Step by Step
Step 1. m$\angle$ 1 + m$\angle$ 2 = 180$^{\circ}$
Step 2: Substitute in 56 for m$\angle$ v2.
m$\angle$ 1 + 56 = 180
Step 3: Subtract 56 from both sides of the equation.
m$\angle$ 1 + 56 - 56 = 180 - 56
Step 4: Solve m$\angle$ 1 = 124$^{\circ}$
