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  2. Circle packing in a square - Wikipedia

    en.wikipedia.org/wiki/Circle_packing_in_a_square

    Circle packing in a square is a packing problem in recreational mathematics, where the aim is to pack n unit circles into the smallest possible square. Equivalently, the problem is to arrange n points in a unit square aiming to get the greatest minimal separation, dn, between points. [ 1] To convert between these two formulations of the problem ...

  3. Congruence (geometry) - Wikipedia

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

    Definition of congruence in analytic geometry. In a Euclidean system, congruence is fundamental; it is the counterpart of equality for numbers. In analytic geometry, congruence may be defined intuitively thus: two mappings of figures onto one Cartesian coordinate system are congruent if and only if, for any two points in the first mapping, the ...

  4. Venn diagram - Wikipedia

    en.wikipedia.org/wiki/Venn_diagram

    v. t. e. A Venn diagram is a widely used diagram style that shows the logical relation between sets, popularized by John Venn (1834–1923) in the 1880s. The diagrams are used to teach elementary set theory, and to illustrate simple set relationships in probability, logic, statistics, linguistics and computer science.

  5. 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.

  6. 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".

  7. These 6 fancy dermatologist-recommended sunscreens are ...

    www.aol.com/lifestyle/these-6-fancy...

    Code: CHEERS. See at Dermstore. Natura Bissé Diamond Luminous UV Defense Light Tinted Fluid SPF 40. $98 $130. Code: CHEERS. See at Dermstore. See 5 more. Fortunately for you, we noticed that many ...

  8. GCE Ordinary Level (United Kingdom) - Wikipedia

    en.wikipedia.org/wiki/GCE_Ordinary_Level_(United...

    The General Certificate of Education (GCE) Ordinary Level, also called the O-level or O level, was a subject-based academic qualification. Introduced in 1951 as a replacement for the 16+ School Certificate (SC), the O-level would act as a pathway to the new, more in-depth and academically rigorous A-level (Advanced Level), in England, Wales and ...

  9. Mechanical Orchard, led by ex-Pivotal CEO, scores $50M round ...

    techcrunch.com/2024/08/07/mechanical-orchard-led...

    In a vote of a confidence, Mechanical Orchard this week closed a $50 million Series B round led by GV (formerly Google Ventures), Alphabet’s corporate venture arm, bringing its total raised to ...