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Angle Exploration for Quadrilaterals
Author:
Jim Doherty
In this sketch you can explore the sum of the sides of a quadrilateral and the sum of the interior angles of a quadrilateral by choosing any vertex to move.
GeoGebra
New Resources
Odd or Even
Slope Field (1)
Slope of a Straight Line: Run and Rise
Angles and Intersecting Lines: Quick Investigation
Supplementary Angles
Discover Resources
Circle theorems with proofs
Start, Perpendicular to line from point not on line
Activity 4 Sliding Trapezoids
#2 Exploration 7.4
Zlati rez in Pi... približek
Discover Topics
LCM and GCD
Conic Sections
Solids or 3D Shapes
Inequalities
Standard Deviation