What is the height of lowercase letters based on the height of lowercase x?

The invisible line whre all characters sit?

The invisible line marking the lowest point of the descender within a font?

Any linear element in typography called?

What is the main vertical stroke in typography called?

What is the thick-to-thin transition in the stroke of a letter called?

What is the bottom of the stem that rests on the baseline called?

What is the horizontal stroke not connected to the stem on at least one end called?

What is the rise above the x-height called?

What is the extends below the baseline called?

What is the curved stroke attached to the stem called?

What is the short line/stroke on open ends of letters called?

What is the curved stroke continuous with the stem called?

What is the short line/stroke on open ends of letters called?