Vertical angles are formed by two intersecting lines and are always equal. However, if two angles in a vertical pair have measures that add to 70°, this means we're likely dealing with two angles formed by an intersection where the adjacent angles add to 70°.
Since vertical angles are equal and adjacent angles supplement each other:
Let the measures of the two angles be \( x \) and \( y \).
According to the information given:
- \( x + y = 70° \)
- Since \( x \) and \( y \) are vertical angles, \( x = y \).
Now, we can substitute \( y \) with \( x \) in the first equation: \( x + x = 70° \) \( 2x = 70° \) \( x = 35° \)
Thus, \( y \) also equals \( 35° \).
Therefore, the measure of each angle is 35°.