What is the proper Hebrew pronunciation/textual form of Kedusha—'Nakdishakh' or 'Nakdash'?

May the congregation recite 'Nakdishakh' together with the prayer leader during the preparatory section of Kedusha?

9 opinions across 3 eras

Must the congregation remain completely silent during the chazan's recitation of 'Nakdishakh' and 'U'Vedivrei Kodshakh', or may they recite it quietly?

4 opinions across 3 eras

When should the congregation begin answering 'Kadosh'—immediately when the chazan reaches 'Vekara Zeh El Zeh' or only after he completes 'Vomer'?

2 opinions

If someone already recited Kedusha in the silent Amidah and then arrives at the synagogue during the congregation's Kedusha, should they repeat it?

2 opinions

Should one direct his feet/stance in any particular way during Kedusha?

3 opinions

Should one raise one's eyes upward during the recitation of Kedusha?

5 opinions

Should one move one's body or lift one's feet from the ground during Kedusha?

5 opinions

What are the boundaries of the Kedusha—which additional prayers are considered part of it and which are not?

2 opinions