Three or more straight lines which intersect at a point in a plane are called concurrent lines.

Straight lines often pass through a point and it is very common in geometry. In some cases, three or more straight lines often pass through a point in a plane, and these straight lines are called concurrent lines.

$\overleftrightarrow{AB}$, $\overleftrightarrow{CD}$, $\overleftrightarrow{EF}$ and $\overleftrightarrow{GH}$ are four lines they are passed through a point $P$ in a plane.

The total number of intersecting lines are four and it is more than two. So, the intersecting lines are called concurrent lines in geometry.

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