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  2. 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.

  3. File:Ford circles.svg - Wikipedia

    en.wikipedia.org/wiki/File:Ford_circles.svg

    Each circle touches, but does not cross, the line and some neighboring circles. Fractions with the same denominator have circles of the same size. Date: 2006: Source: This is an SVG remake of Image:Ford_circles.png, which was taken from en:Image:Ford.circles.gif, originally by en:User:Michael Hardy and placed in the public domain by him. Author ...

  4. 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 ...

  5. 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 ...

  6. Ford circle - Wikipedia

    en.wikipedia.org/wiki/Ford_circle

    In mathematics, a Ford circle is a circle in the Euclidean plane, in a family of circles that are all tangent to the -axis at rational points. For each rational number , expressed in lowest terms, there is a Ford circle whose center is at the point and whose radius is . It is tangent to the -axis at its bottom point, .

  7. 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".

  8. Unit circle - Wikipedia

    en.wikipedia.org/wiki/Unit_circle

    Illustration of a unit circle. The variable t is an angle measure. Animation of the act of unrolling the circumference of a unit circle, a circle with radius of 1. Since C = 2πr, the circumference of a unit circle is 2π. In mathematics, a unit circle is a circle of unit radius—that is, a radius of 1. [1]

  9. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

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