๐ Understanding Altitude and Median of a Triangle
Let's explore the altitude and median of a triangle. While both are line segments drawn from a vertex, they serve different purposes and have distinct properties. Think of it this way: the altitude is all about height, while the median is all about bisecting the base.
๐ Definition of Altitude
The altitude of a triangle is a line segment drawn from a vertex perpendicular to the opposite side (or its extension). It represents the height of the triangle from that vertex.
๐ Definition of Median
The median of a triangle is a line segment drawn from a vertex to the midpoint of the opposite side. It divides that side into two equal segments.
๐ Altitude vs. Median: A Detailed Comparison
| Feature |
Altitude |
Median |
| Definition |
A line segment from a vertex perpendicular to the opposite side. |
A line segment from a vertex to the midpoint of the opposite side. |
| Angle with the Opposite Side |
Forms a 90-degree angle (perpendicular). |
Does not necessarily form a 90-degree angle. |
| Bisection of Opposite Side |
Does not necessarily bisect the opposite side. |
Always bisects the opposite side. |
| Location |
Can be inside, outside, or on the triangle (in the case of a right triangle). |
Always inside the triangle. |
| Number in a Triangle |
Each triangle has three altitudes, one from each vertex. |
Each triangle has three medians, one from each vertex. |
| Point of Concurrency |
Altitudes intersect at the orthocenter. |
Medians intersect at the centroid. |
| Special Properties |
Related to the area and height of the triangle. |
Divides the triangle into two triangles of equal area. |
โจ Key Takeaways
- ๐ Definition:
The altitude is about height (perpendicular), while the median is about bisecting the opposite side.
- ๐ Angle:
The altitude forms a right angle, while the median generally does not.
- โ Bisection:
The median bisects the opposite side, while the altitude does not necessarily.
- ๐ Location:
The altitude can be outside the triangle, while the median is always inside.