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  2. Perpendicular - Wikipedia

    en.wikipedia.org/wiki/Perpendicular

    Perpendicular is also used as a noun: a perpendicular is a line which is perpendicular to a given line or plane. Perpendicularity is one particular instance of the more general mathematical concept of orthogonality ; perpendicularity is the orthogonality of classical geometric objects.

  3. Geometry - Wikipedia

    en.wikipedia.org/wiki/Geometry

    In modern mathematics, they are generally defined as elements of a set called space, which is itself axiomatically defined. With these modern definitions, every geometric shape is defined as a set of points; this is not the case in synthetic geometry, where a line is another fundamental object that is not viewed as the set of the points through ...

  4. Shulba Sutras - Wikipedia

    en.wikipedia.org/wiki/Shulba_Sutras

    Mathematics and Medicine in Sanskrit. pp. 37– 62. Bryant, Edwin (2001). The Quest for the Origins of Vedic Culture: The Indo-Aryan Migration Debate. Oxford University Press. ISBN 9780195137774. Cooke, Roger (2005) [First published 1997]. The History of Mathematics: A Brief Course. Wiley-Interscience. ISBN 0-471-44459-6. Datta, Bibhutibhushan ...

  5. Bijaganita - Wikipedia

    en.wikipedia.org/wiki/Bijaganita

    Meaning [ edit ] The title of the work, bījagaṇita , which literally translates to "mathematics ( gaṇita ) using seeds ( bīja )", is one of the two main branches of mediaeval Indian mathematics, the other being pātīgaṇita , or "mathematics using algorithms".

  6. Trigonometry - Wikipedia

    en.wikipedia.org/wiki/Trigonometry

    The terms perpendicular and base are sometimes used for the opposite and adjacent sides respectively. See below under Mnemonics . Sine (denoted sin), defined as the ratio of the side opposite the angle to the hypotenuse.

  7. Pencil (geometry) - Wikipedia

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

    The line of centers is perpendicular to the radical plane, which is a real plane in the pencil containing the imaginary circle. If the spheres intersect in a point A, all the spheres in the pencil are tangent at A and the radical plane is the common tangent plane of all these spheres. The line of centers is perpendicular to the radical plane at A.

  8. Orthonormality - Wikipedia

    en.wikipedia.org/wiki/Orthonormality

    A unit vector means that the vector has a length of 1, which is also known as normalized. Orthogonal means that the vectors are all perpendicular to each other. A set of vectors form an orthonormal set if all vectors in the set are mutually orthogonal and all of unit length. An orthonormal set which forms a basis is called an orthonormal basis.

  9. Pedal curve - Wikipedia

    en.wikipedia.org/wiki/Pedal_curve

    In mathematics, a pedal curve of a given curve results from the orthogonal projection of a fixed point on the tangent lines of this curve. More precisely, for a plane curve C and a given fixed pedal point P, the pedal curve of C is the locus of points X so that the line PX is perpendicular to a tangent T to the curve passing through the point X.