pindexpentadecagon./pen-tuh-dek-uh-gon, -guhn/US // ˌpɛn təˈdɛk əˌgɒn, -gən //五角形,五角星,五角形的,五角星形Definitionsn.noun · 名词1. Geometry.›a polygon having 15 angles and 15 sides.Level 4More words in p →