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Golden Ratio - Flowers
Author:
Chip Rollinson
Ben Sparks made the excellent Numberphile video (above) with a similar applet to the one below. I made a new version that lets the user change more parameters than Ben's applet does.
GeoGebra
New Resources
Stairs (Optical Illusion)
van Aubel's Theorem
Pelecoid
Isosceles Triangle: Quick Construction
Ellipse, Hyperbola and Circle as Envelopes
Discover Resources
Grid lines on 3-D shape with tangent
Amy Reflections Exam Problem 3
Rule 1
สามเหลี่ยมพีทาโกรัส
Copia de Simulation of the kinematics of a planar 2D mechanism
Discover Topics
Vectors
Square
Percentages
Difference and Slope
Linear Regression