Please use vector to represent the inner center of triangle, the center of gravity, the center of gravity, the center of gravity, and their characteristics and conclusions (do not define them)

If a [OA] + B [ob] + C [OC] = 0, then o is the intersection point of the inner bisector. 2. If [OA] + [ob] + [OC] = 0, then 0 is the intersection point of the center of gravity and the middle line. 3. If [OA] * [ob] = [ob] * [OC] = [OC] * [OA], then 0 is the perpendicularity and height

Please use vector to represent the inner center of triangle, the center of gravity, the center of gravity, the center of gravity, and their characteristics and conclusions (do not define them)

Please use vector to represent the inner center of triangle, the center of gravity, the center of gravity, the center of gravity, and their characteristics and conclusions (do not define them)

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