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  2. Shulba Sutras - Wikipedia

    en.wikipedia.org/wiki/Shulba_Sutras

    1.9. The diagonal of a square produces double the area [of the square]. [...] 1.12. The areas [of the squares] produced separately by the lengths of the breadth of a rectangle together equal the area [of the square] produced by the diagonal. 1.13. This is observed in rectangles having sides 3 and 4, 12 and 5, 15 and 8, 7 and 24, 12 and 35, 15 ...

  3. Indian mathematics - Wikipedia

    en.wikipedia.org/wiki/Indian_mathematics

    [29] [30] It also contains the general statement of the Pythagorean theorem (for the sides of a rectangle): "The rope stretched along the length of the diagonal of a rectangle makes an area which the vertical and horizontal sides make together." [29] Baudhayana gives an expression for the square root of two: [31]

  4. Missing square puzzle - Wikipedia

    en.wikipedia.org/wiki/Missing_square_puzzle

    The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry. It depicts two arrangements made of similar shapes in slightly different configurations.

  5. Perimeter - Wikipedia

    en.wikipedia.org/wiki/Perimeter

    A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length. The perimeter of a circle or an ellipse is called its circumference. Calculating the perimeter has several practical applications. A calculated perimeter is the length of fence required to surround a yard or garden.

  6. Area - Wikipedia

    en.wikipedia.org/wiki/Area

    That is, the area of the rectangle is the length multiplied by the width. As a special case, as l = w in the case of a square, the area of a square with side length s is given by the formula: [1] [2] A = s 2 (square). The formula for the area of a rectangle follows directly from the basic properties of area, and is sometimes taken as a ...

  7. The Key to Actually Quitting Bad Habits - AOL

    www.aol.com/key-actually-quitting-bad-habits...

    Psychologists explain the evolutionary role of dopamine, the truth about dopamine detoxes and how you can really put an end to bad habits.

  8. A turnaround will take time. In Q4, global same-store sales fell 7%, compared to the nearly 4% the Street anticipated. Starbucks China's same-store sales fell 14%, with a 6% drop in foot traffic ...

  9. Square - Wikipedia

    en.wikipedia.org/wiki/Square

    A square has a larger area than any other quadrilateral with the same perimeter. [7] A square tiling is one of three regular tilings of the plane (the others are the equilateral triangle and the regular hexagon). The square is in two families of polytopes in two dimensions: hypercube and the cross-polytope. The Schläfli symbol for the square ...

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