I°) Definition
A median of a triangle is the line through a vertex cut the opposite side in the middle.
| I is the midpoint of [AB].
The right line (AI) is a median of triangle ABC. |
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| The three medians of a triangle are
sont concurrent at a point called the center of gravity of the triangle, rated G.
The center of gravity of a triangle is located 2/3 at each center from the top. AG = 2/3 AI |
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