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Diagonal AC cross Diagonal BD in right angle. What the geometric quality is there among the area of Quadrilateral ABCD , the length of AC , the length of BD ? @You can also move point A,B,C,D,O on CABRI. Download CABRIU data (d71) from here.  |
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Diagonal AC cross Diagonal BD in right angle. What the geometric quality is there among the area of Quadrilateral ABCD , the length of AC , the length of BD ? @You can also move point A,B,C,D,O on CABRI. Download CABRIU data (d71) from here. |
