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Perpendicular Time
Author:
Neil
How many times a day are the minute and hour hand perpendicular?
GeoGebra
New Resources
Droste effect draft
Kopie von parabel - parabol
Roman Numerals Bingo
bearing HK
Shade a spheric triangle with "surface".
Discover Resources
Ryburn1
Harjoitustehtävä 6.3
Geometric Modeling
Position, Speed, and Direction: IM 7.5.8
Demo: dashed trace
Discover Topics
Arithmetic Mean
Rhombus
Statistics
Quadratic Equations
Logarithm