Pages from a known textbook on Euclidean geometry?

These are pages 4 and 5 from Paul Eigenmann, Geometrische Denkaufgaben, Klett+Balmer, Zug, 1982 (ISBN 3-264-72231-3).

I am a bit unsure about the purpose of the question: precisely this textbook or an equivalent one? For what it's worth, Mathematik für Mittelschulen: Geometrie by Frommenwilder and Studer has very similar images: