Почему лучи АВ и СD не являются симметричными относительно оси ON? А___________________B O_______________________________N D____________________C

1 was sitting  2  had been playing  3 decided  4 had crossed 5   lived 6 had been talking  7  knew  8 jumped  9  took 10 had spread  11  were  trying  12 did not believe   13  realized   14  had happened  15  had traveled  16 was gathering 17 raised  18 were walking 19 was cheered  20  started  21 went

Потому что они не равны друг друга