This is the 13450th most frequent Russian word.
намеченные
"Planned" or "outlined."
In this sentence, "намеченные" describes tasks that were previously determined or scheduled.
Мы завершили все намеченные задачи.
We have completed all the planned tasks.
Here, "намеченной" is used to indicate a meeting that has been scheduled or planned beforehand.
Нам нужно подготовиться к намеченной встрече.
We need to prepare for the planned meeting.
In this case, "намеченных" describes the lines that were outlined or marked beforehand for the drawing.