The basic knowledge of mathematics. The relationship of geometric forms. Trigonometric ratios and using the program GSP application used in the calculation of area equilateral polygon. The purpose of the project. To create a formula to find the area that most of the equiangular equilateral polygon attached. Of a circle and check the computation program in which the program is GSP GSP tool in learning math fun, easy to understand. And concrete. Is promoting those interested in the study of creativity and imagination, this study found that
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