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Octahedron with pyramids
Author:
Monica Delgado
Topic:
Pyramid
GeoGebra
Move the pyramid's cuspid points (blue) to form 90˚ angles. That's a shape you can make with origami Sonobe modules.
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alg2_05_05_01_applet_exp_flvs
Droste effect
Exploring Simple Loci 探究簡單軌跡
Average Rate of Change: Graph a Function (2)
Discover Resources
angle at center and circumference
Perpendicular Bisector Activity2
Ratio of areas of 5-gons
Finding the resultant of a system of forces.
Optimal circle for precision
Discover Topics
Congruence
Functions
Quadratic Functions
Differential Calculus
Poisson Distribution