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trapezium diagonal
Author:
Arthur Lee
Topic:
Trapezoid
A diagonal BD of a trapezium equals the sum of bases (AB+CD). How is it cut by another diagonal AC? Drag A or D to explore.
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גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
The Red Chair
z`]]
Ringed Polyhedra
判斷錐體
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