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Assessment
What is the main characteristic of hyperbolic geometry?
The sum of the angles in a triangle is less than 180 degrees.
The parallel postulate holds true.
Shapes are Euclidean.
All triangles are right triangles.
Which of the following figures is used to illustrate hyperbolic geometry?
Euclidean plane
Spherical triangle
Hyperbolic plane (such as the Poincaré disk or the hyperboloid)
Torus
Who is known for the development of hyperbolic geometry?
Euclid
Nikolai Lobachevsky
Isaac Newton
Leonhard Euler
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