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Figure 3: saccheri quadrilateral
Author:
Stephen Anderson
GeoGebra
New Resources
Parallel or Not? (V2)
Play C3 E3 G3 C4_C4
"Compressed" Astroid as Envelope
Introduction
Piano. Keyboard.
Discover Resources
Geometry facts
Level 5 Portfolio
Perp Bisector
Tangram
tetris and octagon
Discover Topics
Linear Regression
General Quadrilateral
Difference and Slope
Variance
Polygons