The image shows two panels side-by-side, each depicting an octahedron in different forms. **Left Panel:** This panel features a flat, two-dimensional representation of an octahedron. It's drawn with simple, clean lines forming a diamond shape with triangular extensions on either side. The lines are thin and create a clear outline of the geometric figure. The octahedron appears as a flat, planar solid. **Right Panel:** This panel displays a three-dimensional, shaded representation of an octahedron. It's constructed from multiple triangles, creating a star-like shape. The triangles are filled with dense, parallel lines, giving the octahedron a shaded, textured appearance. The lines create a sense of depth and volume, making the octahedron appear as a solid, three-dimensional object. **Text:** Both panels include text in a historical font. The text appears to be Latin, likely related to the geometric figure being depicted. The text is positioned above and below the octahedron diagrams. The text on the left panel reads "Octaedron Planum Solidum" and the right panel reads "Octaedron Elevatum Solidum". **Overall:** The image is a historical illustration of an octahedron, showcasing both its planar and solid forms. The style is reminiscent of early scientific diagrams, with a focus on precise geometric representation and detailed shading.