In a vertical pair of angles, the angles are formed by two intersecting lines and are opposite each other. We know that the sum of the measures of the angles in a linear pair is 180°. So, if two angles in a vertical pair have measures that add to 70°, then the two angles add up to 180°.
Let one of the angles be x°.
The other angle in the vertical pair would be 180° - x°.
Since the sum of the measures of the two angles is 70°:
x° + (180° - x°) = 70°
Simplifying the equation:
180° = 70°
Combining like terms and subtracting 70° from both sides:
x° = 70°
Therefore, one angle in the vertical pair has a measure of 70°, and the other angle has a measure of 180° - 70° = 110°.