Vertical Angles Exploration

Definition: Vertical Angles are angles whose sides form 2 pairs of opposite rays. When 2 lines intersect, 2 pairs of vertical angles are formed. One pair of vertical angles is shown below. (Click the other checkbox on the right to display the other pair of vertical angles.) Interact with the following applet for a few minutes, then answer the questions that follow.

Copy and paste the following questions into a google doc. Then answer the questions within the same google doc.

1) Based upon your observations, what can be said about vertical angles? 2) Suppose the measure of the pink angle above is 140 degrees. What would be the measure of its vertical angle?