Misc: TV; What was the name of the butler in To the manor born?

Questions

What is a line drawn from an angle of a triangle to the midpoint of the opposite side?

What is a line of columns supporting a horizontal or arched superstructure?

What is a long wire wound in a close-packed helix and carrying a current?

What is a loosely woven fabric generally used for clothing called?

What is a loss of memory?