§ 51. Основні задачі на побудову та їх розв’язування № 51.1 – 51.56 51.1 51.2 51.3 51.4 51.5 51.6 51.7 51.8 51.9 51.10 51.11 51.12 51.13 51.14 51.15 51.16 51.17 51.18 51.19 51.20 51.21 51.22 51.23 51.24 51.25 51.26 51.27 51.28 51.29 51.30 51.31 51.32 51.33 51.34 51.35 51.36 51.37 51.38 51.39 51.40 51.41 51.42 51.43 51.44 51.45 51.46 51.47 51.48 51.49 51.50 51.51 51.52 51.53 51.54 51.55 51.56
