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2. What parallel lines appear to do as they meet at the vanishing point.
3. A flat, two-dimensional surface that forms the side of a three-dimensional object (e.g., the front, top, or side). (The puzzle uses a slightly longer word to fit the grid: Plane is the core term).
7. The optical illusion that parallel lines appear to get shorter as they recede into the distance.
9. The line representing the viewer's eye level, where the ground and sky appear to meet.
10. A technique used to create the illusion of depth on a flat, two-dimensional surface.

1. The imaginary or lightly-drawn guidelines that connect the corners of an object to the vanishing point(s).
4. The specific point on the horizon line where receding parallel lines appear to meet.
5. The side vanishing points used in two-point perspective.
6. Lines that form a 90-degree angle to the horizon line.
8. A type of perspective that uses two vanishing points on the horizon line.