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Equal Regions Surprise
Author:
Ted Courant
A quarter-circle has a half-circle inscribed, as shown.
GeoGebra
Which is greater, the Red region or the Blue region? Or are they equal?
New Resources
Forming Similar Triangles
Untitled
רישום חופשי
z`]]
從邊長辨認四邊形
Discover Resources
parabola arc lenght
twisted cubic intersects plane
Spherical Coordinates
Rubik's Flexagon Template
G.3.1.1 Is That the Same Hippo?
Ellipse locus construction
Discover Topics
Trigonometry
General Quadrilateral
Quadrilaterals
Linear Equations
Quadratic Functions