Adjacent Angle Definition

In geometry, an adjacent angle can be determined when the two angles are aligned at the same vertex. In simple words, two angles are said to be adjacent if they are lying next to each other.

Whereas the vertex is defined as the endpoint where the lines of an angle meet each other. An adjacent angle can be both supplementary and complementary if each angle ends meet a common vertex.

For more precise understanding of adjacent angle, check out the image attached below:



If you want to know about adjacent side, you can use our Adjacent Side Definition.