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Median (geometry) : ウィキペディア英語版 | Median (geometry)
In geometry, a median of a triangle is a line segment joining a vertex to the midpoint of the opposing side. Every triangle has exactly three medians, one from each vertex, and they all intersect each other at the triangle's centroid. In the case of isosceles and equilateral triangles, a median bisects any angle at a vertex whose two adjacent sides are equal in length. The concept of a median extends to tetrahedra. ==Relation to center of mass== Each median of a triangle passes through the triangle's centroid, which is the center of mass of an object of uniform density in the shape of the triangle. Thus the object would balance on the intersection point of the medians.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Median (geometry)」の詳細全文を読む
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