Dynamic Geometry 1472. Cyclic Quadrilateral, Perpendicular Diagonals, Rectangle, Step-by-step Illustration.
Geometry Problem 871 Brahmagupta's Theorem, Cyclic Quadrilateral, Perpendicular Diagonals, Midpoint.
Dynamic Geometry: Brahmagupta Theorem. GeoGebra, HTML5 Animation for Tablets
Brahmagupta's Corollary Cyclic quadrilateral.
Brahmagupta's Formula Area of a cyclic quadrilateral.
Brahmagupta Formula Extension Area of any quadrilateral.
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