In general , there are two forms of -LRB- homogeneous -RRB- non-Euclidean geometry , hyperbolic geometry and elliptic geometry .
In non-Euclidean geometry they can meet , either once -LRB- elliptic geometry -RRB- , or infinity many -LRB- hyperbolic geometry -RRB- times .
In non-Euclidean geometry they can meet , either once -LRB- elliptic geometry -RRB- , or infinity many -LRB- hyperbolic geometry -RRB- times .
この段落を簡略化してください: In general , there are two forms of -LRB- homogeneous -RRB- non-Euclidean geometry , hyperbolic geometry and elliptic geometry . 出力: