Geometry Picture Problems Inventory 1
Original source: Geometrische Wiederholungs und Denkaufgaben by Paul Eigenmann (Ernst Klett Verlag, Stuttgart, 1964) Images created by John Brown. I believe this work to be transformative, since I often have to translate, solve the problem, and then reconstruct it in GeoGebra. I also add color and try to clarify the problem, aligning it with contemporary expectations of presentation. My goal has been to make this accessible to a new generation of geometry learners and bring some delightful problems to modern platforms. For more on the project: https://amblingpilgrim.com/geometry-problems/ I just received a source with solutions and fine grained categories. I may release that eventually in a digital format, but in the meantime I have included the solutions for this selection in the "Sample Responses" so don't look there if you don't want spoilers.
By John Brown