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  2. LibreOffice Draw - Wikipedia

    en.wikipedia.org/wiki/LibreOffice_Draw

    LibreOffice Draw can be used to create complicated figures using shape tools, straight and curved tools, polygon tools, among other features. Like the other components of LibreOffice, Draw can be run on Linux, macOS and Microsoft Windows. [3] There are community builds for many other platforms.

  3. Flood fill - Wikipedia

    en.wikipedia.org/wiki/Flood_fill

    Flood fill, also called seed fill, is a flooding algorithm that determines and alters the area connected to a given node in a multi-dimensional array with some matching attribute. It is used in the "bucket" fill tool of paint programs to fill connected, similarly colored areas with a different color, and in games such as Go and Minesweeper for ...

  4. Block Elements - Wikipedia

    en.wikipedia.org/wiki/Block_Elements

    Block Elements is a Unicode block containing square block symbols of various fill and shading. Used along with block elements are box-drawing characters, shade characters, and terminal graphic characters. These can be used for filling regions of the screen and portraying drop shadows.

  5. Microsoft PowerPoint - Wikipedia

    en.wikipedia.org/wiki/Microsoft_PowerPoint

    In contemporary operation, PowerPoint is used to create a file (called a "presentation" or "deck") containing a sequence of pages (called "slides" in the app) which usually have a consistent style (from template masters), and which may contain information imported from other apps or created in PowerPoint, including text, bullet lists, tables ...

  6. Partial geometry - Wikipedia

    en.wikipedia.org/wiki/Partial_geometry

    It is a partial geometry if there are integers,, such that: For any pair of distinct points p {\displaystyle p} and ⁠ q {\displaystyle q} ⁠ , there is at most one line incident with both of them.

  7. Differential geometry of surfaces - Wikipedia

    en.wikipedia.org/wiki/Differential_geometry_of...

    Although conventions vary in their precise definition, these form a general class of subsets of three-dimensional Euclidean space (ℝ 3) which capture part of the familiar notion of "surface." By analyzing the class of curves which lie on such a surface, and the degree to which the surfaces force them to curve in ℝ 3 , one can associate to ...

  8. Peres–Horodecki criterion - Wikipedia

    en.wikipedia.org/wiki/Peres–Horodecki_criterion

    It is also called the PPT criterion, for positive partial transpose. In the 2×2 and 2×3 dimensional cases the condition is also sufficient.

  9. Missing square puzzle - Wikipedia

    en.wikipedia.org/wiki/Missing_square_puzzle

    A true 13×5 triangle cannot be created from the given component parts. The four figures (the yellow, red, blue and green shapes) total 32 units of area. The apparent triangles formed from the figures are 13 units wide and 5 units tall, so it appears that the area should be S = ⁠ 13×5 / 2 ⁠ = 32.5 units.