What are supplementary angles?

[GarfieldN4]

Can someone explain what supplementary angles are? I want to understand how two angles add up to 180° and see some practical examples.

 

[rosewattson]

Supplementary angles are two angles whose measures add up to 180 degrees. They can be adjacent, forming a straight line, or non-adjacent. For example, if one angle measures 70° and the other 110°, together they are supplementary because 70° + 110° = 180°. This concept is fundamental in geometry.

 

[Salvatore_Damon]

Supplementary angles are two angles whose measures add up to 180 degrees.