yes
No. Spherical geometry did not disprove Euclidean geometry but demonstrated that more than one geometries were possible. Different circumstances required different geometries. Similarly hyperbolic geometry did not disprove either of the others.
i have no idea lol
No, both spherical and hyperbolic geometries are noneuclidian.
False.
One main characteristic of non-Euclidean geometry is hyperbolic geometry. The other is elliptic geometry. Non-Euclidean geometry is still closely related to Euclidean geometry.
Geometry that is not on a plane, like spherical geometry
No. Spherical geometry did not disprove Euclidean geometry but demonstrated that more than one geometries were possible. Different circumstances required different geometries. Similarly hyperbolic geometry did not disprove either of the others.
No.
Geometry that is not on a plane, like spherical geometry
i have no idea lol
No, both spherical and hyperbolic geometries are noneuclidian.
In Euclidean geometry, parallels never meet. In other geometry, such as spherical geometry, this is not true.
False.
Spherical
Euclidean geometry, non euclidean geometry. Plane geometry. Three dimensional geometry to name but a few
In Euclidean plane geometry, two lines which are perpendicular not only can but must intersect. (I believe the same is true for elliptic geometry and hyperbolic geometry.)
In Euclidean plane geometry, two lines which are perpendicular not only can but must intersect. (I believe the same is true for elliptic geometry and hyperbolic geometry.)