Characteristics of Adjacent Angles

Check what makes these two angles <CAD and <DAB adjacent:

Vertically Opposite Angles

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Complementary Meaning

[color=#000000]In the app below, the two colored angles [/color][color=#000000]are said to be [/color][b][color=#000000]complementary angles[/color][/b][color=#000000]. [/color]
Interact with this app for a few minutes. LARGE POINTS are moveable.
In your own words, describe what you think it means for 2 angles to be complementary.

Supplementary Angles

[color=#000000]In the applet below, the [/color][b][color=#ff00ff]pink angle[/color][/b][color=#000000] and the [/color][b][color=#1e84cc]blue angle[/color][/b][color=#000000] are said to be [/color][b][color=#000000]supplementary angles[/color][/b][color=#000000]. [br][br]Interact with this applet for a minute or two, and answer the questions that appear below it.[/color]
If the blue angle is 80 degrees, what should be the measure of the pink angle? Knowing that both are supplementary angles.

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