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Non-Euclidean Triangle Continuum

Gaussian
curvature
1
show
data
center
incenter
show
construction
Euler line
Evaluating Initialization
Triangle
ABC
is the stereographic projection of a triangle on a sphere tangent to the blue disk at its center. Change the Gaussian curvature of that sphere from
-1
to
+1
or drag the projected triangle vertices anywhere within the blue disk to obtain a non-Euclidean triangle of any shape. Examine the data for the triangle. Show various triangle centers or the Euler line of the triangle.
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