SS (Side-Side) Congruence Theorem?

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Drag the red points in the top half of the drawing to adjust the givens, then adjust the points to try to make congruent or non-congruent triangles in the bottom half.

SS (Side-Side)

Is SSS enough to prove triangles congruent? If not, why not?

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台形
垂心
平面
平行四辺形
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