**THEORIA** | the vocabulary of the visual construct

#### Theoria is Thinking … to describe knowledge in the form of words.

### 3d modelling

3d modelling
3D modeling (or three-dimensional modeling) is the process of developing a mathematical representation of any surface of an object in three dimensions via specialized software.

### aerial perspective

aerial perspective
or atmospheric perspective is a technique for rendering depth or distance by muting the hue, tone, and distinctness of objects perceived as receding from the...

### aerography

Aerography
is a surrealist method in which a stencil used in spraypainting is replaced by a three-dimensional object.

### Amman tiling

Amman tiling
is an aperiodic set of two tiles and a foursome of ‘golden rhombohedra’, which form aperiodic tilings in three dimensions. The best-known Ammann...

### analytical drawing

analytical drawing
relates to the drawing of lines to represent the three-dimensional structure and geometry of a form, proceeding generally from the whole to the...

### analytique

analytique
is an elevation drawing of a façade, surrounded by a decorative arrangement of drawings of important details and sometimes a plan or section of...

### anamorphosis

anamorphosis
Anamorphosis
is a distorted image that appears in natural form only when viewed at a special angle or reflected from a curved mirror.

### Archimedean spiral

Archimedean spiral
The Archimedean spiral, or arithmetic spiral, is a spiral named after the 3rd century BC Greek mathematician Archimedes. It is the locus of points corresponding to the locations over time of...

### automatic drawing

Automatic drawing
was developed by the surrealists, as a means of expressing the subconscious. In automatic drawing, the hand is allowed to move ‘randomly’ across the...

### axonometric

axonometric
Axonometric is a paraline drawing of an axonometric projection, having all lines parallel to the three principal axes drawn to scale but diagonal and curved...

### behaviours

behaviours
The way in which something acts and or reacts in response to a particular situation or stimulus.

### cabinet drawing

Cabinet drawing
is a paraline drawing of an oblique projection, having all lines parallel to the picture plane drawn to exact scale, and the receding lines...

### calligramme

calligramme
is a text or poem of a type developed by Guillaume Apollinaire in which the words or letters make up a shape, particularly a shape connected to the...

### cavalier drawing

Cavalier drawing
is a paraline drawing of an oblique projection, having the receding lines perpendicular to the picture plane drawn to the same scale as the...

### combinations

combinations
a way of selecting items from a collection, such that the order of selection does not matter.

### compositions

compositions
the nature of something’s ingredients or constituents; the way in which a whole or mixture is made up.

### conception drawing

conception drawing
Conception is a drawing of something that does not exist yet.

### conditions

conditions
the state of something with regard to its appearance, quality, or working order.

### connections

connections
a relationship in which things are linked or associated with something else…

### construction drawing

Construction drawings
also called contract drawings or working drawings, are the portion of the contract documents showing accurate graphic or pictorial form the design, location,...

### contour drawing

Contour drawing
is a technique of drawing lines to represent the contours of a subject, without shading or modelling of form.

### cross-contour drawing

©Bea Martin
cross-contour drawing
Cross-contour drawing is the technique of drawing lines to represent a series of cuts across the surface of a form rather than its...

### deltoid curve

deltoid curve
a hypocycloid of three cusps. In other words, it is the roulette created by a point on the circumference of a circle as it rolls without slipping along...

### descriptive geometry

descriptive geometry
the theory of making projections of three-dimensional objects on a plane surface in order to deduce their geometric properties and relationships.

### design drawing

design drawing
Any of the drawings made to aid in the visualisation, exploration, and evaluation of a concept in the design process.

### elevation drawing

elevation drawing
an elevation is an orthographic projection of an object or structure on a vertical picture plane parallel to one of its sides

### encounters

©Bea Martin
encounters
to unexpectedly be faced with or experience something.

### exploded view

exploded view
an exploded view, or expanded view, is a drawing that shows the individual parts of a structure or construction separately but Indicates their proper...

### freehand drawing

freehand drawing
Freehand drawing is the art, process, or technique of drawing by hand without the aid of drafting tools or mechanical divides, in order to...

### gesture drawing

gesture drawing
Gesture drawing is a technique of drawing a single or multiple lines freely and quickly as a subject is visualised and perceptions of volume,...

### golden section

golden section
The division of a line so that the whole is to the greater part as that part is to the smaller part (i.e....

### grading plan

grading plan
a plan showing the proposed finish contours and elevations of the ground surface of a construction site.

### hendecagon

hendecagon
undecagon, endecagon, or 11-gon is an eleven-sided polygon. A regular hendecagon has internal angles of 147.27 degrees.

### hexadecagon

hexadecagon
hexakaidecagon, or 16-gon is a sixteen-sided polygon. A regular hexadecagon is a hexadecagon in which all angles are equal and all sides are congruent.

### hybrid drawing

hybrid drawing
any drawing that mixes and superimposes a variety of ideas, techniques or media into a new, meaningful image

### irregular shape

irregular shape
A polygon that does not have all sides equal and all angles equal

### juxtaposition

juxtaposition
to place close together two things being seen with contrasting effect…

### military perspective

military perspective
in a military projection, the horizontal sections are isometrically drawn so that the floor plans are not distorted and the verticals are drawn at...

### one-point perspective

One-point perspective
is a linear perspective of a rectangular object or volume having a principal face parallel with the picture plane so that the vertical...

### operations

operations
the way that the parts of a system work together, or the process of making parts of a system work together.

### orthographic drawings

orthographic projection
is a way of drawing an 3D object from different directions. Usually a front, side and plan view is drawn so that a person looking...

### paraline obliques

paraline obliques
a paraline oblique is a paraline drawing of an oblique projection, having all lines and faces parallel to the picture plane drawn to exact scale, and all...

### perceptions

perceptions
the conversion of something from one form or medium into another.

### perspective drawing

perspective drawing
any various techniques for representing three-dimensional objects and spatial relationships on a two-dimensional surface as they might appear to the eye
also: linear perspective / perspective drawing / perspective...

### possibilities

possibilities
something that you can choose to do in a particular situation.

### section drawing

section drawing
a section is an orthographic projection of an object or structure as it would appear if cut through by an intersecting plane to show its...

### square pyramid

square pyramid
a pyramid having a square base. If the apex is perpendicularly above the center of the square, it will have C4v symmetry.

### star polygon

star polygon
is a type of non-convex polygon. A regular star pentagon, {5/2}, has five corner vertices and intersecting edges.
also: concave decagon

### study drawing

study drawing
A drawing executed as an educational exercise, produced as a preliminary to a final work, or made to record observations.

### superellipse

superellipse
a closed curve resembling the ellipse, retaining the geometric features of semi-major axis and semi-minor axis, and symmetry about them, but a different overall shape.
also: Lamé curve

### tetrahedron

tetrahedron
in geometry, a tetrahedron, also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex corners....

### three-point perspective

three-point perspective
also: mechanical drawing
three-point perspective
linear perspective in which parallel lines along the width of an object meet at two separate points on the horizon and...

### transformations

transformations
a complete change in the appearance or character of something.

### translations

translations
the conversion of something from one form or medium into another.

### triangular prism

triangular prism
A triangular prism is a three-sided prism; it is a polyhedron made of a triangular base, a translated copy, and 3 faces joining corresponding sides. A right triangular prism has rectangular sides, otherwise, it is oblique. A uniform...

### two-point perspective

two-point perspective
Two-point perspective is a linear perspective of a rectangular object or volume having two principal faces oblique to the picture plane, so that vertical...

### Voronoi diagram

Voronoi diagram
is the division of a space into contiguous neighbouring cells. The cells relate to a set of points ( Voronoi sites) in that space....

### Weaire-Phelan model

Weaire-Phelan model
A regular assembly of two types of irregular polyhedral cells with twelve and fourteen faces, respectively, combined in the ratio of 2:6 in...