Culture is a complete, integrated and comprehensive unity in a community group, which allows the formation of mathematical ideas that grow in cultural practices. Likewise, in the process of learning mathematics, it is often presented in a certain context or connecting mathematics with everyday life, one of which is by linking it to local wisdom or culture known as ethnomathematics. This study is a qualitative descriptive study that aims to identify and describe mathematical concepts in the Kandingang dance. This research was conducted in Kalumbang, Wangga Village, Kambera District, East Sumba Regency, East Nusa Tenggara Province. The subjects of this study were traditional figures who understood the origins of the Kandingang Dance. Kandingan dance is one of the traditional dances originating from East Sumba, East Nusa Tenggara (NTT). Generally, this dance is performed by female dancers who wear accessories in the form of tassels made from horsetails while dancing. Research shows that every movement in the Kandingang dance in East Sumba contains various ethnomathematic concepts. In the context of Kandingang dance movements, ethnomathematics consists of several geometric concepts that are visible in every dance movement such as: vertical lines, horizontal lines, arbitrary triangles, equilateral triangles, acute angles and right angles.
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