Answer:
∠ 1 = 83°
Step-by-step explanation:
These angles share the same line and ray, so we know that
∠ 1 + ∠ 2 = 180°
Since ∠ 2 = 97°, we can substitute the value for angle 2 and solve for angle 1.
∠ 1 + ∠ 2 = 180°
∠ 1 + 97° = 180°
∠ 1 = 180° - 97°
∠ 1 = 83°
