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Euclid's Elements - Book III, Proposition 21
Author:
mtpberg
Topic:
Circle
Any two angles in the same segment (see Definition 8) are congruent.
GeoGebra
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The Crazy Circle Illusion: How are these dots moving? GeoGeb
Triangular Pyramid
Group Quiz #11
properties of a triangle
Cointerior angles explore
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Trigonometric Functions
Correlation
Cylinder
Derivative
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