Question

what is concurrent lines and adjacent angle​

Answer 1

Answer:

a concurrent line same satraight three point is called concurrent

adjacent angle is bisect each other is called adjacent angle

Answer 2

Answer:

lines in a plane or higher-dimensional space are said to be concurrent if they intersect at a single point.Two angles are Adjacent when they have a common side and a common vertex (corner point) and don't overlap.

adjacent angles

Angle ABC is adjacent to angle CBD

Because:

they have a common side (line CB)

they have a common vertex (point B)