For numbers 17-20, refer to the given figure at the right. А 17. Which of the following angles are adjacent? A. LABD and LEBC C. 2 DBE and ZEBC B. ZABE and ZDBE D. Z CBD and LEBD 18. What is the common vertex of the angles in the figure? A. point A B. point B C. point C B D. point D _19.2CBD and DBA are adjacent angles, what is their common side? A. ray BA B. ray BC C.ray BD D. ray DE 20. if m2 CBD = 90 and m_ ABD = 30, what is m m CBA? A. 1800 B. 120° C. 600 D. 450 Balayan East District Paz Street, Balayan Ratano​