To determine which angle is a vertical pair with angle <1, we first need to recall the definition of vertical angles. Vertical angles are formed when two lines intersect, and they are opposite each other. Vertical angles are equal in measure.
Given:
- m<1 = 98°
- m<2 = 82°
- m<3 = 98°
- m<4 = 82°
Since m<1 and m<3 both equal 98°, they are vertical angles. Therefore, the angle that is a vertical pair with <1 is:
<3.