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  2. Quadrant (plane geometry) - Wikipedia

    en.wikipedia.org/wiki/Quadrant_(plane_geometry)

    Signs of trigonometric functions in each quadrant. In the above graphic, the words in quotation marks are a mnemonic for remembering which three trigonometric functions (sine, cosine, tangent and their reciprocals) are positive in each quadrant. The expression reads "All Science Teachers Crazy" and proceeding counterclockwise from the upper ...

  3. Multiview orthographic projection - Wikipedia

    en.wikipedia.org/wiki/Multiview_orthographic...

    Gaspard Monge's four quadrants and two planes. Modern orthographic projection is derived from Gaspard Monge's descriptive geometry. [4] Monge defined a reference system of two viewing planes, horizontal H ("ground") and vertical V ("backdrop"). These two planes intersect to partition 3D space into 4 quadrants, which he labeled: I: above H, in ...

  4. Cartesian coordinate system - Wikipedia

    en.wikipedia.org/wiki/Cartesian_coordinate_system

    The black dot shows the point with coordinates x = 2, y = 3, and z = 4, or (2, 3, 4). A Cartesian coordinate system for a three-dimensional space consists of an ordered triplet of lines (the axes ) that go through a common point (the origin ), and are pair-wise perpendicular; an orientation for each axis; and a single unit of length for all ...

  5. Four corners of the world - Wikipedia

    en.wikipedia.org/wiki/Four_corners_of_the_world

    In Mesopotamian cosmology, four rivers flowing out of the garden of creation, which is the center of the world, define the four corners of the world. [1] From the point of view of the Akkadians, the northern geographical horizon was marked by Subartu, the west by Mar.tu, the east by Elam and the south by Sumer; later rulers of all of Mesopotamia, such as Cyrus, claimed among their titles LUGAL ...

  6. Mnemonics in trigonometry - Wikipedia

    en.wikipedia.org/wiki/Mnemonics_in_trigonometry

    Signs of trigonometric functions in each quadrant. All Students Take Calculus is a mnemonic for the sign of each trigonometric functions in each quadrant of the plane. The letters ASTC signify which of the trigonometric functions are positive, starting in the top right 1st quadrant and moving counterclockwise through quadrants 2 to 4.

  7. Clock position - Wikipedia

    en.wikipedia.org/wiki/Clock_position

    In this case, the position would be ahead and above the horizon, an advantageous position for the attacker. The phrase "on your six" refers to the six o'clock or the adjacent positions; that is, the expression cautions that someone is behind you or on your tail. Likewise, "check your six" or "check six" means "watch your back" or "watch out for ...

  8. Pentago - Wikipedia

    en.wikipedia.org/wiki/Pentago

    The game is played on a 6×6 board divided into four 3×3 sub-boards (or quadrants). Taking turns , the two players place a marble of their color (either black or white) onto an unoccupied space on the board, and then rotate one of the sub-boards by 90 degrees either clockwise or anti-clockwise.

  9. Four-quadrant movie - Wikipedia

    en.wikipedia.org/wiki/Four-quadrant_movie

    Although four-quadrant movies are generally family-friendly, this is not a requirement. [3] Titanic, which was the highest-grossing film ever following its theatrical run, has been cited as a strong example of a four-quadrant movie that blended action and romance in a historical setting to appeal to all four quadrants. [4]