Vertical Angles Conjecture
Vertical angles are non-adjacent angles formed by a pair of intersecting lines. You can think of them as the opposite angles that appear in the "bow-tie" formed when two lines intersect.
The precise statement of the conjecture is:
Conjecture (Vertical Angle Conjecture ):
If two angles are vertical, then they are equal in measure.
Interactive Sketch Pad Demonstration:
Please feel free to try the activity sheet associated with this conjecture.
Next: Linear Pairs Conjecture
Back: Conjectures in Geometry Conjecture List or to the Introduction.