solids![click to hear](/images/speaker.jpg)
Geometric shapes in three dimensions that are delimited by surfaces.
helix ![click to hear](/images/speaker.jpg)
Volume or solid of spiral shape that turns at a constant angle.
cylinder ![click to hear](/images/speaker.jpg)
Volume or solid generated by the rotation of a straight line (generatrix) moving along a curved line (directrix).
regular octahedron ![click to hear](/images/speaker.jpg)
Volume or solid with eight triangular sides of equal area; it has six vertices and 12 edges.
parallelepiped ![click to hear](/images/speaker.jpg)
Volume or solid with six sides (parallelograms) that are parallel in pairs.
cube ![click to hear](/images/speaker.jpg)
Volume or solid with six square sides of equal area and six equal edges; it has eight vertices.
pyramid ![click to hear](/images/speaker.jpg)
Volume or solid generated by straight lines (edges) connecting the angles of a polygon (base) to the vertex and whose sides form triangles.
cone ![click to hear](/images/speaker.jpg)
Volume or solid generated by the rotation of a straight line (generatrix) along a circular line (directrix) from a fixed point (vertex).
torus ![click to hear](/images/speaker.jpg)
Volume or solid generated by the rotation of a circle at an equal distance from its center of rotation.
sphere ![click to hear](/images/speaker.jpg)
Volume with all the points on its surface the same distance from its center; the solid thus delimited is a round ball.
hemisphere ![click to hear](/images/speaker.jpg)
Half sphere cut along its diameter.