



 Cabri 3D is a new interactive solid geometry software, evaluation version is available; construct and manipulate 3D figures





 Learn more about Cabri 3D from these sites:





 Here are some sample Cabri 3D files (.cg3) and html files embedding the 3d dynamic figures (can be opened with your browser after installing the evaluation version of Cabri 3D).






 Rotate a cube about an axis through opposite vertices






 Rotate a regular octahedron about an axis through midpoints of opposite edges





 Regular Dodecahedron, its cross sections, rotation and inscribed solids








 3 other platonic solids inscribed






 Mutually perpendicular edges






 Golden rectangles inscribed






 Net of a regular octahedron






 Triangular prism cut into 2 pyramids of equal volume






 Pyramids of same base and height






 Perspective drawing of a cube






 Perspective drawing of a square 1






 Perspective drawing of a square 2






 Tangent planes of a sphere





 How to make a swimming pool





 The following steps describe the construction of a swimming pool model with cross sections in two directions. Click here to see the finished construction.





 step 2: add a vertical segment





 step 3: add a new point on the segment





 step 4: make an inclined plane






 Define the plane by the points indicated. Turn around the figure if necessary.





 step 5: cut the box by the inclined plane






 Turn to the other side of the solid again. Choose the 'cut polyhedron' tool. click the bottom part of the box and the inclined plane.





 step 6: mask the cutting plane and turn the box surface to empty (right click the objects)





 step 7: add a segment and point to define a cross section





 step 8: add a perpendicular plane






 click a point and segment to define the perpendicular plane





 step 9: add intersections of the plane and other edges of the box






 select the plane and each edge to add an intersection





 step 10: make the cross section






 Mask the perpendicular plane; add a polygon by selecting the vertices concerned.






