Linear Pair of Angles

Author:
Mathguru, GeoGebra Materials Team
<ADC and <BDC are a linear pair of angles.
GeoGebra Applet
Move point C to change the angle values. 1. What do you notice about the location of the linear angles? 2. What do you observe about the angle measures of the linear angles? 3. A linear pair of angles has two important characteristics. Based on your answers to questions 1 and 2, can you identify these characteristics?

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