Simplify the following text for a Grade 9 native English-speaking person.
Original: A geometry where the parallel postulate can not hold is known as a non-Euclidean geometry . Geometry that is independent of Euclid 's fifth postulate ( i.e. , only assumes the first four postulates ) is known as absolute geometry ( or , in other places known as neutral geometry ) .
Simplified: This formed a new geometry called elliptic geometry .