When two lines intersect as in EXAMPLE E, they form two pairs of angles that are opposite to each other called vertical angles, In Figure \(\PageIndex{7}\), \(\angle x\) and \(\angle x'\) are one pair...When two lines intersect as in EXAMPLE E, they form two pairs of angles that are opposite to each other called vertical angles, In Figure \(\PageIndex{7}\), \(\angle x\) and \(\angle x'\) are one pair of vertical angles. \(\angle y\) and \(\angle y'\) a.re the other pair of vertical angles, As suggested by Example \(\PageIndex{5}\), \(\angle x = \angle x'\) and \(\angle y = \angle y'\).
When two lines intersect as in EXAMPLE E, they form two pairs of angles that are opposite to each other called vertical angles, In Figure \(\PageIndex{7}\), \(\angle x\) and \(\angle x'\) are one pair...When two lines intersect as in EXAMPLE E, they form two pairs of angles that are opposite to each other called vertical angles, In Figure \(\PageIndex{7}\), \(\angle x\) and \(\angle x'\) are one pair of vertical angles. \(\angle y\) and \(\angle y'\) a.re the other pair of vertical angles, As suggested by Example \(\PageIndex{5}\), \(\angle x = \angle x'\) and \(\angle y = \angle y'\).