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Petlach Geometry
Author:
Al Petlach
Topic:
Geometry
GeoGebra
New Resources
Parallel or Not? (V2)
"Compressed" Astroid as Envelope
Rotating Points (Optical Illusion)
Pelecoid
Slope of a Straight Line: Run and Rise
Discover Resources
Vertex to standard 4
perpendicular bisector
Law of Sines
MAT.ALG.418, 310463, F6
Determinants and inverse matrices
Discover Topics
Quadrilaterals
Exponent
Scatter Plot
Quadratic Equations
Rhombus