The problem asks to identify a secant line, a chord, and a tangent line based on the given diagram of a circle. The circle has center $K$ and diameter $FM$. The line $HL$ intersects the circle at $M$, and the line $IJ$ intersects the circle at $G$ and $F$.

1. Problem Description

The problem asks to identify a secant line, a chord, and a tangent line based on the given diagram of a circle. The circle has center $K$ and diameter $FM$. The line $HL$ intersects the circle at $M$, and the line $IJ$ intersects the circle at $G$ and $F$.

2. Solution Steps

(a) A secant line is a line that intersects a circle at two points. In the diagram, the line $IJ$ intersects the circle at points $G$ and $F$. Thus, $IJ$ is a secant line.

(b) A chord is a line segment that connects two points on a circle. In the diagram, the line segment $FG$ is a part of the secant line $IJ$, and it connects two points on the circle. $FM$ is a diameter, and a diameter is a chord that passes through the center of the circle. $HL$ intersects the circle at M, so the segment $HM$ is not a chord. So, $FM$ is a chord.

(c) A tangent line is a line that touches a circle at exactly one point. From the diagram, $HL$ intersects at one point. So $HL$ is a tangent line.

3. Final Answer

(a) $IJ$

(b) $FM$

(c) $HL$