<![CDATA[This study aims to identify and describe the concepts of plane geometry found in the roof structure of the traditional houses in Weepedi Village through an ethnomathematical approach. The research employed a qualitative descriptive method using observation, interviews, and documentation as data collection techniques. The collected data were analyzed through data reduction, data presentation, and conclusion drawing. The findings reveal that the roof structure of the traditional houses incorporates various plane geometric shapes, including triangles, trapezoids, rectangles, and rhombuses. These geometric forms serve not only as structural components of the building but also reflect the community's cultural values, aesthetic principles, and local wisdom. The results indicate that geometric concepts have been intuitively applied in the construction of traditional houses and have significant potential as culturally based mathematics learning resources. Therefore, integrating ethnomathematics into mathematics education is expected to enhance students' understanding of geometric concepts while fostering appreciation for local cultural heritage]]>
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