Mutsara wokutanga: Apo nzvimbo ine zero Gaussian curvature isingachinji, ipapo inenge iri nzvimbo inogona kugadziriswa uye geometry yenyika yacho iEuclidean geometry. Mutsara wechipiri: Kana nzvimbo iine kukombama kusingachinji kunogadziriswa zero, inzvimbo yeEuclidean uye geometry yenyika ndeye geometry yeGaussian. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
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