konkav dörtgen

== Turkish == === Etymology === From Turkish "konkav", from French "concave" (concave) + "dörtgen" (polygon) === Pronunciation === IPA(key): [konkaβ dœɾtɟen] === Noun === konkav dörtgen (definite accusative konkav dörtgeni, plural konkav dörtgenler) concave polygon ==== Declension ==== ==== Synonyms ==== içbükey dörtgen