Question

for the figure shown, find m∠1

Explanation:

Step1: Recall exterior - angle property

The exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles.

Step2: Identify non - adjacent interior angles

The two non - adjacent interior angles to $\angle1$ are $50^{\circ}$ and $60^{\circ}$.

Step3: Calculate $\angle1$

$m\angle1=50 + 60$

Answer:

$110$