TRIANGLES AND CIRCLES     Imprimer   French version


I°) Line joining the circles of 2 segments 1 

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In a triangle ABC, the line through the circles I and J of the sides [AB] and [AC] is parallel to third side [BC].

IJ = 1/2 BC and IJ // BC.

II°) Right circles: 2nd part 

In a triangle ABC, if right line (d) is parallel to one side and passes through the middle of another side, then it bisects the third side in the middle.

I the middle of [AB] and (d) / / (BC)
alors J is the midpoint of [AC].

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