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If the diagonals of a quadrilateral are congruent..
Author:
Dave Van Leeuwen
Limits display to quadrilaterals with congruent diagonals.
GeoGebra
New Resources
Construct a Square
History of Maths - Work in progress
Angles and Intersecting Lines: Quick Investigation
Ellipse, Hyperbola and Circle as Envelopes
Limaçon / Cardioid as a Locus - A Classical Construction
Discover Resources
Example 3
What are those
Turner_NumericalInvariantsA
Circle Theorems
Newton's Method on the Complex plane
Discover Topics
Reflection
Intersection
Median Value
Symmetry
Sphere