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The main material in the Dimension Three Geometry chapter at the SMA / MA level is the calculation of the distance and the angle between space elements, ie points, lines, and planes. While the material discussed in the Vector chapter includes: addition, point multiplication, cross product, and orthogonal projection. The author observes that the two chapters are responded differently by high school / MA students. The problem of distance and angle in the wake of the three dimensional space is a problem that is felt difficult by the majority of high school students. On the other hand, vector concepts and formulas are relatively easier to understand. The difficulties students experience when facing the problem of distance or angle of the three dimensions is spatial difficulty. That is, students often can not succeed in imagining precisely the position of fields, lines, or points that need to be calculated distance or angle. In this paper, a vector approach will be developed to solve the problem of distance and angle on the building of three dimensional space, be it cube, beam, or pyramid. By using the vector approach, it is expected that students can more easily understand the concept of three dimensional space and can be faster in completing the calculation of distance and angle.

KAJIAN TEORI PENYELESAIAN MASALAH JARAK DAN SUDUT PADA BANGUN RUANG DIMENSI TIGA MENGGUNAKAN PENDEKATAN VEKTOR