IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. These clear plastic instruments are ...

There are two ways to construct a triangle using a ruler and a protractor. The first is a Side, Angle, Side (SAS) construction where two sides and the angle between them is known. The second is an ...

World Scientific has published a book on the Participatory approach to Modern Geometry by Jay Kappraff. Written to meet a specific need as there is no book on rigorous Euclidean geometry available on ...

The Ddiin Exlicon drawing tool combines a compass, protractor, ruler, golden ratio tool, curved ruler and hexagon and pentagram and the lip stencils all in one device. From accurate ellipses to ...