Hypopnea
发表于 2025-4-1 02:21:12
Jürgen Janssen,Wilfried Laatz that geometry should be studied at school. At ?rst, the study of geometry is experimental. Results are taught and used in numerous examples. Only later do proofs come into play. But are these proofs truly necessary, or can we do without them? A natural answer is that every statement must be provide