Answer: A .30°
Step-by-step explanation:
In the given figure , we are given measures two angles of triangles as [tex]117^{\circ}[/tex] and [tex]33^{\circ}[/tex] .
The Angle sum property of triangle says that the sum of all the angles in a triangle is 180°.
Using Angle sum property , we have
∠1+117+33°=180°
⇒∠1+150°=180°
⇒∠1=180°-150°=30° [Subtract 150° from both sides.]
hence, the measure of m∠1 = 30°
