Angle ADC and Angle BDC are a linear pair of angles.

Move point C to change the angle values. [br][br][br]1. What do you notice about the location of the linear angles?[br][br][br]2. What do you observe about the angle measures of the linear angles?[br][br]3. A linear pair of angles has two important characteristics. Based on[br]your answers to questions 1 and 2, can you identify these[br]characteristics?