угол ВАД=ВСД=90 градусов, угол АДВ=15 градусов, угол ВДС=75 градусов Доказать, что АД // ВС 

Орфографический разбор 10 любых слов!!!

какие виды политических организаций вы знаете?

Катети прямокутного трикутника дорівнюють 24 см і 70 см.Знайдіть периметр і площу трикутника.

помогите пожалуйстаПоставьте глаголы в скобках в одно из прошедших времен 1 When I ( come) the lecture already (cstort) 2 They ( go) to Moscow some days ago 3 When I come he ( leave) so we only had time for a few words 4 When we ( come) to the airport, the plane already ( land) 5 He suddenly ( understand) that he ( travel) in the wrong direction 6 Our teacher ( speak) many foreign languages 7 Who ( speak) with you? 8 He (play) tennis 9 I ( go) home when we met 10 My son ( play) the piano 11 They already (translate) this text last lesson 12 You (do) this exer cise last week 13 We ( discuss) your plan yesterday at 10 o'clock 14 It (pain) when I went for a walk 15 What you ( do) there? 16 I ( not, write) at the lesson 17 Students ( Trarslate) this text the whole lesson yesterday 18 He already ( come)? 19 she said that she ( not like) this book and ( try) to find a more interesting one 20 They train ( leave) at 10 21 When I (sce) him he ( cross) the street 22 While he ( water) the garden it ( begin) to rain 23 When Ann ( finish) her homework she ( turn) on TV