Such angles are called vertically opposite angles.
Vertically opposite angles!
Vertically opposite angles, or vert. opp. angles for short.
When two lines intersect, the angles across from each other are called vertically opposite angles, or just opposite angles. Opposite angles are equal to one another. See 'related links' below.
In geometry and mathematics, opposing angles are called verticals. They share the same vertex, but they still are vertically opposite of one another.
Vertically opposite angles. (vert. opp.)
Vertically Opposite Angles.
They are congruent.
Such angles are called vertically opposite angles.
Vertically opposite angles!
Allied (or co-interior) angles are supplementary. Vertically opposite angles are always equal.
Vertically opposite.
Vertically opposite angles, or vert. opp. angles for short.
Vertically opposite angles are the angles that are opposite each other when two lines cross. Vertical means they share the same vertex.
equal
Where two straight lines cross the "vertically opposite" angles are equal.
z: alternate interior angles c: consecutive interior angles f: corresponding angles x: vertically opposite angles