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CharlesLighthouse
Author:
Charles Lohr
New Resources
"Compressed" Astroid as Envelope
Play C3 E3 G3 C4_C4
Isosceles Triangle: Quick Construction
Bottema's Theorem
Ellipse, Hyperbola and Circle as Envelopes
Discover Resources
practice2
Start, copy a triangle
mouse
interior and exterior angles of regular polygons list
三巧板:題 2
Discover Topics
LCM and GCD
Logarithm
Linear Programming or Linear Optimization
Reflection
Quadrilaterals