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GeoGebra
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Explore Sum of the Interior Angles of a Quadrilateral
Author:
Paige Williamson
,
Terry Lee Lindenmuth
GeoGebra
Adjust the quadrilateral to test your conjectures.
New Resources
Graphical solution of ax² + bx + c = k
Sketching Vector Function (1)
Average Distance
Circles - Relative Positions
Graph of y = a(x − h)² + k
Discover Resources
Ptolemy's Theorem Extension
Construction of an Angle Bisector
Inside the Circle
Johnny Falls Ill
Discover Topics
Parametric Curves
Sine
Quadratic Functions
Triangles
Definite Integral