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2. Bar chart - Wikipedia

   en.wikipedia.org/wiki/Bar_chart

   A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column chart and has been identified as the prototype of charts. [1]

3. Tape diagram - Wikipedia

   en.wikipedia.org/wiki/Tape_diagram

   A tape diagram is a rectangular visual model resembling a piece of tape, that is used to assist with the calculation of ratios and addition, subtraction, and commonly multiplication.

4. Gallery of curves - Wikipedia

   en.wikipedia.org/wiki/Gallery_of_curves

   1.3 Curves with genus greater ... Print/export Download as PDF ... This is a gallery of curves used in mathematics, by Wikipedia page. See also list of curves ...

5. Wikipedia:Graphs and charts - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Graphs_and_charts

   Livegap Charts creates line, bar, spider, polar-area and pie charts, and can export them as images without needing to download any tools. Veusz is a free scientific graphing tool that can produce 2D and 3D plots. Users can use it as a module in Python. GeoGebra is open-source graphing calculator and is freely available for non-commercial users.

6. Dot plot (statistics) - Wikipedia

   en.wikipedia.org/wiki/Dot_plot_(statistics)

   The first has been used in hand-drawn (pre-computer era) graphs to depict distributions going back to 1884. [1] The other version is described by William S. Cleveland as an alternative to the bar chart, in which dots are used to depict the quantitative values (e.g. counts) associated with categorical variables. [2]

7. Glossary of mathematical symbols - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_mathematical...

   A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula.