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Giraud’s Theorem
Author:
Moira Chas
The area of a triangle on the unit sphere equals the sum of its interior angle minus π. Proof (from Schwartz book Mostly surfaces" Divide the sphere in regions as in the sum below.
GeoGebra
New Resources
Tracing the Ellipsoid with Ellipses
Number of Heads in Tossing Two Coins
Ball Structure 2
Witch of Agnesi - A Classical Construction
Tracing the Sine and Cosine Functions
Discover Resources
Task 3 : Isosceles Triangle
Completing the square
Long live triangles!
Taylor Polynomials of Cosine
Task 1b: Victoria
Discover Topics
Pie Chart or Circle Chart
Arithmetic Mean
Arithmetic
Subtraction
Derivative