Ethnomatematics of geometry shape in the Gedongsongo Temple

The objective of the study is to explore and find out ethnomathematics Gedongsongo Temple, located in Central Java, Indoensia. type qualitative with an exploration way ethnographic approach. data obtained form data, source research through observation, interviews, documentation, literature related Temple. collection technique was done by questioning, observing, interviewing, documenting. results showed that Temple has potential be integrated into mathematics learning. Ethnomathematics can includes concept flat area, volume space, comparison/ratio, reflection, symmetry. flat-geometry found several parts including square, rectangle, triangle, trapezoid. spatial-geometry also cubes, blocks, tubes, a triangle prism. Meanwhile, comparison/ratio Golden Ratio on fore-temple Perwara area Candi Gedong III. symmetry reflection I. These concepts applied learning as contextual geometry problem well introducing cultural elements students.