A line that follows the edges and shape of an object.
Contour line
Lines that go across the surface of an object to show its curves and shape.
Cross-contour line
Making parallel lines close together to create shading.
Hatching
A line that isn’t actually drawn but that your brain “sees” anyway.
Implied line
How thick or thin a line is.
Line weight
The different kinds of marks (dots, lines, smudges) you make with your art tools on paper or canvas.
Mark-making
Lines that curve gracefully instead of being straight or angular. Think of waves or spirals.
Curvilinear
Regular shapes that can be measured with math tools, like circles, squares, triangles, and rectangles.
Geometric shape
The empty space around and between your main objects. Sometimes these spaces make interesting shapes too!
Negative shape
Irregular, natural-looking shapes that remind you of things in nature (like puddles, clouds, or leaves) instead of perfect math shapes.
Organic shape
The main object or subject in your artwork - the thing you’re actually drawing.
Positive shape
How things line up with each other in a drawing - like checking if one object is directly above another.
Alignment
The quick, simple lines you draw first to plan where everything will go in your artwork and to capture the main movement or energy.
Compositional gesture
How the sizes of different parts relate to each other - like making sure a person’s head isn’t too big for their body.
Proportion
How big or small something is drawn compared to its real size.
Scale
A way to check sizes and angles in your drawing by holding up your pencil to what you’re looking at, then comparing it to your paper.
Sighting and measuring
A small frame or window (sometimes made from your hands or cardboard) that helps you pick out which part of a scene to draw.
Viewfinder
A way of drawing that makes things look 3D on flat paper by having lines meet at vanishing points.
Linear perspective
The lines that go from the front of your picture toward the vanishing points.
Orthogonals
When one object is partly in front of another object, showing which one is closer to you.
Overlap
The spots on your horizon line where parallel lines seem to meet when they go far away.
Vanishing points
The way light and shadow work together in art to make things look solid and three-dimensional. It’s using strong contrasts between light and dark areas.
Chiaroscuro
Drawing a simple shape (like a box or oval) around your whole subject first, then adding details inside it - like putting your drawing in an “envelope.”
Envelope method
The three-dimensional shape of an object - not just its outline but its full, solid shape with depth.
Form