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GoGeometry Action 59!
Author:
Tim Brzezinski
Topic:
Parallelogram
,
Quadrilaterals
Creation of this applet was inspired by a
post
from Antonio Gutierrez (
GoGeometry
). Feel free to move any of the BIG POINTS anywhere you'd like.
How can we formally prove what this applet informally illustrates?
GeoGebra
Quick (Silent) Demo
New Resources
Poorly Drawn Parallelograms
Variation Theory Parallelogram Proofs
Droste effect draft
Finding Average Rate of Change of a Function
What is an Isogonal Conjugate?
Discover Resources
presentation
Translation1
StAC_Quadratic Transformations
PTFC
The ASS case of the congruence theorem
Discover Topics
Tree Diagrams
Conic Sections
Median Value
LCM and GCD
Indefinite Integral