Lesson 3

Reviews of the previous class (HTML). Consolidation. Coordinate systems. Units/scales. Geometric entities.
Preview. Modeling and editing of solids and surfaces (Platonic solids), use of the Autocad program (continued).

Exercise 1 - Terahedron

Create triangles with by polygon command by edge. Change UCS to create circles. Rotate the triangles after the intersections of the circles. Create pyramid wireframe. Using Region command create surfaces.

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Exercise 2 - Octahedron

Create a octahedron starting from a rectangular base, drawing triangles with by polygon command by edge. Draw a vertical line starting from the intersection of the diagonals. Change UCS and create a circle. Rotate the triangles after the intersections of the circle and the vertical line. Create pyramid wireframe. Using Region command create surfaces.

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