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Quadrilateral Surprise!
Author:
Tim Brzezinski
How would you put this property (dynamically illustrated below) into words? (Applet works best if quadrilateral is kept convex.) How can you formally prove what this applet informally illustrates?
GeoGebra
Quick (Silent) Demo
New Resources
Angles of Intersecting Lines
z`]]
Graph of y = ax² + bx + c
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Drunk Parabola
Discover Resources
Circle and Chord bisector
Guided Notes
running
e, telo... 1
Blank Classic Template with Pen Tool
Discover Topics
Limits
Curve Sketching
Congruence
Pie Chart or Circle Chart
Exponential Functions