Презентация по математике "Путешествие в город Треугольников" на тему "Треугольники" 8 класс

Задача  Пролива Признаков                                                                          1.1.Отрезки АВ и СD пересекаются в точке О. ∠ АСО = ∠ ODB, АС = 5см, АО = 6см,   OD = 8см, DB = 10см.  Найдите СО и ОВ. Задача  Пролива Признаков 1.2.Найдите АС, если ВС =12см, NM = 6см,  CN = 4см, ВМ = NC.                   В                                      N         М       А                                                        С Задача  Пролива Признаков       А                                                        С Задача  Пролива Признаков 1.3. Доказать:  ∆АВС ∆ А1В1С1.   А                                В       500                      С1                                                      В1                                                           600                                                                    700                         600                                  С                                                                                  А1                                                                                          Задача Пролива Признаков                                                                                       2.1.   Найдите АВ и ВС, если DЕ ‖ АС.                                                  В                   х+6              8                  D          10           E 1.3. Доказать:  ∆АВС ∆ А1В1С1.   А                                В       500                      С1                                                      В1                                                           600                                                                    700                         600                                  С                                                                                  А1                     Х                                        15                                                      А                                                 С Задача  Пролива Признаков 2.2. Найдите АС и АВ, если ВС =2, BD =3,          АЕ = 12, ∠ СВD = ∠ САЕ.                                                      С                           Задача  Пролива Признаков                                                                          1.1.Отрезки АВ и СD пересекаются в точке О. ∠ АСО = ∠ ODB, АС = 5см, АО = 6см,   OD = 8см, DB = 10см.  Найдите СО и ОВ. Задача  Пролива Признаков 1.2.Найдите АС, если ВС =12см, NM = 6см,  CN = 4см, ВМ = NC.                   В                                      N         М                   В                          D               А                                         Е Задача  Пролива Признаков 2.3. Доказать:  ∆АВС ∆ А1В1С1.   А                                В       800                      С1                                                      В1                                                           600                                                                    400                         600                                  С                                                                                  А1