### Posters Featuring Great Mathematicians.

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# Tag: math

## Newest Posters

### Posters Featuring Great Mathematicians.

## Using Proportions and Grids in Logo Design

The backgrounds of these posters are available as desktop wallpapers. The link is available at the bottom of the post.

Mathematically a proportion is defined as a four-term relation among quantities: A is to B as C is to D. In essence, the task of proportional reasoning is to compare the relation between one pair of terms (or quantities) with the relation between the other pair. One of the simplest examples of proportional reasoning occurs in the identification of shapes. Even young children can tell whether two shapes are equally proportioned, in terms of the ratios of their heights to their widths for instance—even if they are very different in overall size.

What Eye-Movements Tell Us About Ratios and Spatial ProportionsbyCatherine Sophian and Martha E. Crosby