Pantometria — A Geometrical Treatize of Measuring

Longimetra.

A collection of four quadrangular geometric shapes: a parallelogram, a rectangle, a trapezoid, and a square.

All other quadrangles are Trapezia.

Polygons are such figures as have more than four sides, whose angles, if they are all alike and equal, are termed Equiangular Polygons.

A hexagon with the text "A figure of many sides" written inside.

All other plane surfaces, whether they are enclosed by straight or curved lines, shall be named irregular figures.

When two right (straight) lines drawn in one plane surface are placed at such an equal distance that, even if they were infinitely extended on either side, they would never meet nor converge, they shall be called Parallels.

Two horizontal parallel lines with the label "Paralleles" between them.

A Quadrant is the fourth part of a circle, enclosed by two semidiameters, commonly divided into 90 portions; these parts are named grades or degrees.

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