SOLUTION: Prove that if two “vertical triangles” are congruent then the shape is either a parallelogram or a trapezoid

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Question 1063594: Prove that if two “vertical triangles” are congruent then the shape is either a parallelogram or a trapezoid
Answer by ikleyn(52887) About Me  (Show Source):
You can put this solution on YOUR website!
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There is no such an object/notion in Geometry as "vertical triangle".