Xét tam giác AMO và tam giác DNO ( = nhau trg hợp c-g-c )

=> góc OAM = góc ODN

=> AB // CD ( cs 1 cặp góc slt = nhau )

...............................

Oái mk tịt oy, bn tự lm típ nhé

Choose the most suitable words or phrases to fill in the blanks.

Her relatives didn’t do anything to help her, and her friends _______.

A. didn’t neither

B. didn’t too

C. didn’t either

D. did too