1. vocabulary

2. Searching line: a rough sketch line utilized to find the desired line or shape.
It involves lifting the pencil off the paper and being gestural rather then precise.
Horizon: divides the ground space in a work
Highlight: a bright, reflective area (1-2 on the V. S.) shaped like an ellipse
Midtone: a grey tone on the V. S. (3-8)

3. Cast shadow: shadow produced by a form on a nearby surface – shaped like an ellipse
Reflective highlight: shows bending of light around a rounded form – it is not bright white, it is a dark midtone AND it is on the edge of the sphere, not in the cast shadow
Middleground: area under the form

4. Foreground: subject and most detail including a horizon establishes the division of space into these three sections
Shadow: area devoid of light (9-10 on V. S.)
Background: area behind the form; furthest with least detail