<![CDATA[The Kasepuhan Cirebon Palace is one of the historical sites that still stand in Cirebon City and reflect the local community's cultural heritage, including ethnomathematical practices embedded in daily life. This study aims to analyse the ethnomathematical aspects of the Kasepuhan Palace as a source of contextual mathematics learning. This qualitative research employed an ethnographic approach and was conducted in the Pekalipan area of Cirebon City. The data were collected from a building complex (Keraton Kasepuhan), and one informant was selected based on their role as cultural custodians (Abdi Dalem). Data collection techniques included observation, interviews, and documentation. The findings suggest that the architectural structure, floor patterns, and carved ornaments of the Kasepuhan Palace incorporate various mathematical concepts, including geometry, angles, symmetry, and measurement. These concepts appear in the spatial layout, pillar arrangement, and shapes such as rectangles, triangles, cuboids, limas, and tubes. The study suggests that incorporating the ethnomathematical elements of the Kasepuhan Palace into mathematics learning can enhance students’ understanding of geometric concepts while fostering their appreciation for local cultural wisdom. However, this study is limited to one palace complex and a small number of informants; future research could expand to other historical sites or compare multiple palaces to enrich the ethnomathematical analysis.]]>
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