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Geometry 13 Online
OpenStudy (anonymous):

Equilateral triangles ABD and ACE are drawn on sides AB and AC respectively of a triangle ABC outside it. Prove that DC=BE.

Directrix (directrix):

@sandeepk85 Please post the diagram.

OpenStudy (anonymous):

|dw:1379735942097:dw|

Directrix (directrix):

I colored the diagram to distinguish the equilateral triangles and to look for how to begin.

Directrix (directrix):

Do you think we could get Tri DBC congruent to Tri EBC? Just wondering.

OpenStudy (anonymous):

how

OpenStudy (anonymous):

how tri DBC congruent to tri EBC

Directrix (directrix):

I do not know. We may have to prove another pair of triangles congruent. Let us think about this. I need to draw a larger diagram and take it apart.

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