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2. Circle packing - Wikipedia

   en.wikipedia.org/wiki/Circle_packing

   A compact binary circle packing with the most similarly sized circles possible. [7] It is also the densest possible packing of discs with this size ratio (ratio of 0.6375559772 with packing fraction (area density) of 0.910683). [8] There are also a range of problems which permit the sizes of the circles to be non-uniform.

3. Geometry template - Wikipedia

   en.wikipedia.org/wiki/Geometry_template

   Geometry template. Stencil for the curves of y = x2, y =tan ( x ), y =sin ( x ), and y = ⁠ 1 2 ⁠ sin ( x ). A geometry template is a piece of clear plastic with cut-out shapes for use in mathematics and other subjects in primary school through secondary school. It also has various measurements on its sides to be used like a ruler.

4. Compass (drawing tool) - Wikipedia

   en.wikipedia.org/wiki/Compass_(drawing_tool)

   A compass, also commonly known as a pair of compasses, is a technical drawing instrument that can be used for inscribing circles or arcs. As dividers, it can also be used as a tool to mark out distances, in particular, on maps. Compasses can be used for mathematics, drafting, navigation and other purposes. Prior to computerization, compasses ...

5. Math circle - Wikipedia

   en.wikipedia.org/wiki/Math_circle

   A math circle is an extracurricular activity intended to enrich students' understanding of mathematics.The concept of math circle came into being in the erstwhile USSR and Bulgaria, around 1907, with the very successful mission to "discover future mathematicians and scientists and to train them from the earliest possible age".

6. Circle packing in a circle - Wikipedia

   en.wikipedia.org/wiki/Circle_packing_in_a_circle

   Circle packing in a circle is a two-dimensional packing problem with the objective of packing unit circles into the smallest possible larger circle. Table of solutions, 1 ≤ n ≤ 20 [ edit ]

7. Lists of mathematics topics - Wikipedia

   en.wikipedia.org/wiki/Lists_of_mathematics_topics

   The template to the right includes links to alphabetical lists of all mathematical articles. This article brings together the same content organized in a manner better suited for browsing. Lists cover aspects of basic and advanced mathematics, methodology, mathematical statements, integrals, general concepts, mathematical objects, and reference ...

8. Tangent lines to circles - Wikipedia

   en.wikipedia.org/wiki/Tangent_lines_to_circles

   Tangent lines to circles. In Euclidean plane geometry, a tangent line to a circle is a line that touches the circle at exactly one point, never entering the circle's interior. Tangent lines to circles form the subject of several theorems, and play an important role in many geometrical constructions and proofs.

9. Semicircle - Wikipedia

   en.wikipedia.org/wiki/Semicircle

   2 ⁠. Perimeter. (π+2)r. In mathematics (and more specifically geometry ), a semicircle is a one-dimensional locus of points that forms half of a circle. It is a circular arc that measures 180° (equivalently, π radians, or a half-turn ). It only has one line of symmetry ( reflection symmetry ). In non-technical usage, the term "semicircle ...