Lesson IV - polyhedrons construction


The class was about construction of:
1. Tetraedro 2. Hexaedro3. Octaedro4. Dodecaedro

1.  Tetraedro is made of 4 triangles using ALIGN command.


2. Hexaedro is made using its planimetry and command 3DROTATE.



3. Octaedro is made with 8 triangles.


I have made one object and then using 3MIRROR I have turned second one to create octaedro.


4. Dodecaedro is made with 12 pentagons.





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Lesson V - icosaedron construction

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Today I have created icosaedron 1. The bottom and top of this object is created with pentagon base and 5 triangles. 2. Using 3DARRAY command I have created other faces. 3. 3DMIRROR gives me base of the icosaedron. 4. Rotate one base of 36 degrees. 5. Using triangle and 3DARRAY command I create other faces. 6. I copy 5 faces and use 3DMIRROR, ALIGN and MOVE to complete object.
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