Answer:
Angle 1 measures 25 degrees
Explanation:
Hello! Remember you have to write complete questions in order to get good and exact answers. Here I'll assume the diagram shown below. In that figure, we know that:
[tex]\angle 1=? \\ \\ \angle 2=155^{\circ}[/tex]
The figure shows that these two angles are supplementary, so they add up to 180 degrees. Therefore:
[tex]\angle 1+\angle 2=180^{\circ} \\ \\ Substituting \ \angle 2=155^{\circ}: \\ \\ \angle 1+155^{\circ}=180^{\circ} \\ \\ \\ Isolating \ \angle 1: \\ \\ \angle 1=180^{\circ}-155^{\circ} \\ \\ \boxed{\angle 1=25^{\circ}}[/tex]
