@mathletics_usa @MrsMathia oh, noneuclidean geometry, of course you can have a triangle with three right angles on a sphere.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
@mathletics_usa @MrsMathia oh, noneuclidean geometry, of course you can have a triangle with three right angles on a sphere.