На рисунке изображен параллелограмм abcd выразите вектор ad через вектор оd = вектр а и оc = вектор b

1)did he clean his room yesterday? yes, he did. 2)did he wash the dishes yesterday? yes, he did 3)did she watch tv yesterday? yes, she did 4)did they dance at the party yesterday? yes, they did