Linear pair of angles are formed when two lines intersect each other at a single point.
The angles are said to be linear if they are adjacent to each other after the intersection of the two lines.
The figure shows the line WZ intersected by lines YX and YZ. At X, two adjacent angles are formed at the point where WZ and YX intersect.
This means angles WXY and YXZ are linear angles.
Linear angles always add up to 180°, thus:
m∠WXY + m∠YXZ = 180°
