Simplify the following text for a Grade 14 native English-speaking person.
Original: In mathematics , hyperbolic geometry ( also called Lobachevskian geometry or Bolyai-Lobachevskian geometry ) is a non-Euclidean geometry , meaning that the parallel postulate of Euclidean geometry is replaced .
Simplified: In mathematics , hyperbolic geometry is a non-Euclidean geometry , meaning that the parallel postulate of Euclidean geometry is replaced .