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Quadrilateral ABCD
Author:
Eugene Steele
Topic:
Quadrilaterals
GeoGebra
New Resources
Icosahedron1
Tutorial: Create lists of numbers and objects
Poorly Drawn Parallelograms 2
Poorly Drawn Parallelograms 3
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Discover Resources
The Tangent line and the Unit Circle
Tilted timer
System of linear ODE
show that triangle is one-fifth of large square
FORMULAE
Discover Topics
Trapezoid
Scalene Triangles
Matrices
Reflection
Prism