What does the Torah mean when it writes "Vechafalta es ha'Yeri'ah ha'Shishis ... "?
Rashi and Rashbam: It means that half of it hung in front of the Mishkan (like a modest Kalah with a veil on her face) - and half of the curtain at the other end hung down two Amos below the bottom curtains. 1
Why does the Torah state that the sixth curtain was doubled in front of the Mishkan - seeing as only half of it hung down in front, and it was not doubled?
Riva #1 (citing R. Elyakim) and Tosfos ha'Shalem (in Pasuk 9, citing Hadar Zekenim): Anything that is not stretched is called 'Kaful'.
Riva #2: Because "Vechafalta es ha'Yeri'ah" is as if it had written 'min ha'Yeriah' (part of it). 1
Riva: Like we find in Va'eira, Sh'mos, 9:29 "ke'Tzeisi es ha'Ir" - which means 'min ha'Ir'.
The Gemara states that the boards were one Amah thick, the north and south walls covered two Amos of the western wall, and the Mishkan was ten Amos wide. How do we kow that they were not half an Amah thick, and that the Mishkan was eleven Amos wide?
Riva (citing Tuch): Because we learn from the Heichal (which was twenty Amos wide - a third of its length [sixty Amos]) that it was a third of its length, and the Mishkan wwas thirty Amos long.
How did the thirty Amos length of the goats-hair curtains cover the width of the Mishkan?