Shape Information

Shape Info

Square: In geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, or right angles). It can also be definedas a rectangle in which two adjacent sides have equal length.



Vertex: In geometry, a vertex (plural: vertices or vertexes) is a point where two or more curves, lines, or edges meet. As a consequence of this definition, the point where two lines meet to form an angle and the corners of polygons and polyhedra are vertices.



Line: Spectral line shape describes the form of a feature, observed in spectroscopy, corresponding to an energy change in an atom, molecule or ion. Ideal line shapes include Lorentzian, Gaussian and Voigt functions, whose parameters are the lineposition, maximum height and half-width.

Hexagon: In geometry, a hexagon (from Greek ἕξ hex, "six" and γωνία, gonía, "corner, angle") is a 6-sided polygon or 6-gon. The total of the internal angles of any hexagon is 720°.



Polygon: a figure, especially a closed plane figure, having three or more, usually straight, sides.






Quadrilateral: In Euclidean plane geometry, a quadrilateral is a polygon with four edges (or sides) and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided), hexagon (6-sided) and so on.





Area: Area is the quantity that expresses the extent of a two-dimensional figure or shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object.





Perimeter: Perimeter is the distance around a two dimensional shape, or the measurement of the distance around something; the length of the boundary. A perimeter is a path that surrounds a two-dimensional shape. The word comes from the Greek peri (around) and meter (measure).





Line Segment: 


Ray: In geometry, a ray is a line with a single endpoint (or point of origin) that extends infinitely in one direction





Pentagon: In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle^[1]) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A pentagon may be simple or self-intersecting. A self-intersecting regular pentagon (or star pentagon) is called a pentagram.



Angle: In planar geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane.



Acute: In medicine, an acute disease is a disease, a short course, or both. Acute may be used to distinguish a disease from a chronic form, such as acute leukemia and chronic leukemia, or to highlight the sudden onset of a disease, such as acute myocardial infarction.



Obtuse: Geometry Index · Degrees (Angle) ... it easier to remember: Also: Acute, Obtuse and Reflex are in alphabetical order.



Parallel: In geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. By extension, a line and a plane, or two planes, in three-dimensional Euclidean space that do not share a point are said to be parallel.



Rectangle: In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°). It can also be defined as a parallelogram containing a right angle.