# The Line Segment JL Is An Altitude In Triangle JKM

In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its end points. A line segment is denoted by its two end points, for example, line segment JL. An altitude in a triangle is a line segment from a vertex of the triangle to the opposite side such that it is perpendicular to the side. In triangle JKM, line segment JL is an altitude.

## Types of Altitude In Triangle JKM In triangle JKM, there are three types of altitudes, namely, altitude from J, altitude from K and altitude from M. Line segment JL is the altitude from J. Altitude from K is denoted by line segment KM and altitude from M is denoted by line segment MJ. All three altitudes meet at a common point, which is the orthocenter of the triangle JKM.

## Properties Of Line Segment JL Line segment JL is the altitude from vertex J of triangle JKM. As it is an altitude, it is perpendicular to the opposite side, which is side KM. Moreover, it is also the median from vertex J. A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side. Therefore, line segment JL is both an altitude and a median from vertex J.

## Features of Line Segment JL Line segment JL has several features that make it distinct from other line segments in the triangle. Firstly, it is the longest side of the triangle. This is because it is the hypotenuse of the right-angled triangle formed between line segment JM and line segment ML. Secondly, line segment JL is also the side of the triangle opposite to the largest angle, which is angle K. Lastly, line segment JL is the altitude from vertex J, which is the highest point of the triangle.

## Applications of Line Segment JL Line segment JL has several applications in geometry. Firstly, it can be used to calculate the area of the triangle. The area of triangle JKM can be calculated using the formula A=1/2 × base × height, where the base is line segment KM and the height is line segment JL. Secondly, line segment JL can also be used to calculate the angles of the triangle. Using the sine rule, the angles of triangle JKM can be calculated using the lengths of the line segments.

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In conclusion, line segment JL is an altitude in triangle JKM. It is the longest side of the triangle and is perpendicular to side KM. It is also the median from vertex J and is used to calculate the area and angles of the triangle. Thus, line segment JL is an important line segment in the triangle JKM.