Fano plane
In finite geometry, the Fano plane (after Gino Fano) is a finite projective plane with the smallest possible number of points and lines: 7 points and 7 lines, with 3 points on every line and 3 lines t
Halftone
Halftone is the reprographic technique that simulates continuous-tone imagery through the use of dots, varying either in size or in spacing, thus generating a gradient-like effect. "Halftone" can also
Pappus configuration
In geometry, the Pappus configuration is a configuration of nine points and nine lines in the Euclidean plane, with three points per line and three lines through each point.
Geomantic figures
The 16 geomantic figures are the primary symbols used in divinatory geomancy. Each geomantic figure represents a certain formed state of the world or the mind and can be interpreted in various ways ba
Polka-dot paint
Polka dot paint is a paint of "polka dot color", i.e., a paint which paints an object with a polka dot pattern. The paint is traditionally the subject of a fool's errand prank played upon apprentices
Quincunx
A quincunx (/ˈkwɪn.kʌŋks/) is a geometric pattern consisting of five points arranged in a cross, with four of them forming a square or rectangle and a fifth at its center. The same pattern has other n
Five dots tattoo
The five dots tattoo is a tattoo of five dots arranged in a quincunx, usually on the outer surface of the hand, between the thumb and the index finger. The tattoo has different meanings in different c
Orchard-planting problem
In discrete geometry, the original orchard-planting problem asks for the maximum number of 3-point lines attainable by a configuration of a specific number of points in the plane. It is also called th
Screentone
Screentone is a technique for applying textures and shades to drawings, used as an alternative to hatching. In the conventional process, patterns are transferred to paper from preprinted sheets. It is
Domino Tiles
Domino Tiles is a Unicode block containing characters for representing game situations in dominoes. The block includes symbols for the standard six dot tile set and backs in horizontal and vertical or
Ben Day process
The Ben Day process is a printing and photoengraving technique for producing areas of gray or (with four-color printing) various colors by using fine patterns of ink on the paper. It was developed in
Tetractys
The tetractys (Greek: τετρακτύς), or tetrad, or the tetractys of the decad is a triangular figure consisting of ten points arranged in four rows: one, two, three, and four points in each row, which is
Polka dot
Polka dot is a pattern consisting of an array of large filled circles of the same size. Polka dots are commonly seen on children's clothing, toys, furniture, ceramics, and Central European folk art bu