Created on 2024-02-06

This is a scanned image or a photograph of a sheet of paper with hand-drawn sketches and handwritten text. There are three distinct parts: 1. On the top left, there is a simple cross diagram with a vertical and a horizontal line intersecting. Next to this cross, the text reads "BASE A-90°". 2. In the center at the top, you can find handwritten instructions that say: "Revolve equally the 2 lines around Base A and you get Base B with reference to Base A". 3. On the right side, there is a more complex drawing with several lines intersecting at different angles, which seems to depict the concept explained in the written instruction. This part of the image looks like the visualization of "Base B" in reference to "Base A" after rotation. 4. At the bottom left, there is another cross-like diagram similar to the first one but without any labels. The handwriting and the drawings are all done in black, while the paper has an off-white or light yellow color. The sheet is overall a bit worn out and aged.

Created on 2024-03-29

The image appears to be a hand-drawn diagram or sketch. It shows a set of intersecting lines and angles, with labels indicating "Base A" and "Base B". The text explains that the two lines around the "Base A" label represent revolving equally, and that "you set Base B with reference to Base A". The diagram seems to be demonstrating some kind of geometric or mathematical concept, but without further context, I cannot determine the specific meaning or purpose of the image.