Category: Mathematics : What geometric shape has 4 equal sides?

Questions

(Fr., 'follow') - (1) Go staight on to the next section or movement without a break; (2) An indication to an accompanist to follow any changes in tempo made by the soloist.?

(It.) - A bowing indication for string players to play near the bridge to achieve a brittle tone.?

(It.) - A bowing indication to string players to play near or above the fingerboard, producing a 'colourless' tone.?

- The second degree of the scale (e.g. D in the scale of C major) or the triad built on that degree.?

(Fr.) - Same as sul tasto.?