Invariance of a triangle's area

Topic:Area

The applet illustrates the conservation of the area of the triangle ABC1 (or ABC2) while dragging points C1 (or C2) on the line k (k parallel to l). In addition, invariance of the property S1 = S2.

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Sticky point to list of points
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ROTASI
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Histogram
Rhombus
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Symmetry
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