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2. Line segment - Wikipedia

   en.wikipedia.org/wiki/Line_segment

   A closed line segment includes both endpoints, while an open line segment excludes both endpoints; a half-open line segment includes exactly one of the endpoints. In geometry , a line segment is often denoted using an overline ( vinculum ) above the symbols for the two endpoints, such as in AB .

3. Line (geometry) - Wikipedia

   en.wikipedia.org/wiki/Line_(geometry)

   Here, p is the (positive) length of the line segment perpendicular to the line and delimited by the origin and the line, and is the (oriented) angle from the x-axis to this segment. It may be useful to express the equation in terms of the angle α = φ + π / 2 {\displaystyle \alpha =\varphi +\pi /2} between the x -axis and the line.

4. Straightedge and compass construction - Wikipedia

   en.wikipedia.org/wiki/Straightedge_and_compass...

   It can only be used to draw a line segment between two points, or to extend an existing line segment. The compass can have an arbitrarily large radius with no markings on it (unlike certain real-world compasses). Circles and circular arcs can be drawn starting from two given points: the centre and a point on the circle. The compass may or may ...

5. Category:Line (geometry) - Wikipedia

   en.wikipedia.org/wiki/Category:Line_(geometry)

   Pages in category "Line (geometry)" The following 14 pages are in this category, out of 14 total. ... Line of sight; Line segment; N. Number line; P. Parallel line; R ...

6. Secant line - Wikipedia

   en.wikipedia.org/wiki/Secant_line

   Common lines and line segments on a circle, including a secant. A straight line can intersect a circle at zero, one, or two points. A line with intersections at two points is called a secant line, at one point a tangent line and at no points an exterior line. A chord is the line segment that joins two distinct points of a circle. A chord is ...

7. Hatch mark - Wikipedia

   en.wikipedia.org/wiki/Hatch_mark

   Longer line segments are used for integers and natural numbers. Shorter line segments are used for fractions. Hatch marks provide a visual clue as to the value of specific points on the number line, even if some hatch marks are not labeled with a number. Hatch marks are typically seen in number theory and geometry.

8. Edge (geometry) - Wikipedia

   en.wikipedia.org/wiki/Edge_(geometry)

   In geometry, an edge is a particular type of line segment joining two vertices in a polygon, polyhedron, or higher-dimensional polytope. [1] In a polygon, an edge is a line segment on the boundary, [2] and is often called a polygon side. In a polyhedron or more generally a polytope, an edge is a line segment where two faces (or polyhedron sides ...

9. Arc diagram - Wikipedia

   en.wikipedia.org/wiki/Arc_diagram

   An arc diagram is a style of graph drawing, in which the vertices of a graph are placed along a line in the Euclidean plane, with edges being drawn as semicircles in one or both of the two halfplanes bounded by the line, or as smooth curves formed by sequences of semicircles. In some cases, line segments of the line itself are also allowed as ...