FiveThirtyEight

Draw A Circle. Then Draw A Triangle. Now Solve A Riddle.

Welcome to The Riddler. Every week, I offer up problems related to the things we hold dear around here: math, logic and probability. There are two types: Riddler Express for those of you who want ...
The Atlantic

Appleton's Cyclopædia of Drawing

Designed as a Text-book for the Mechanic, Architect, Engineer, and Surveyor. Comprising Geometrical Projection, Mechanical, Architectural, and Topographical Drawing ...
insider.si.edu

Geometric Model by A. Harry Wheeler, Regular Hexagon Transformable into Rhombus Transformable into Two Equilateral Triangles, Plane Dissection

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 six quadrilateral pieces are ...
BBC

Simon Beck: Brean Down sand design is artist's 500th creation

Simon Beck is known for his sand and snow drawings at Brean Down beach A sand and snow artist who is known for his massive symmetrical shapes has created his 500th piece on a beach in Somerset. This ...
Nature

Solid Geometry and Conic Sections, with Appendices on Transversals and Harmonic Division; for the Use of Schools Geometrical Note-Book, containing Easy Problems in Gemotrical ...

THESE works are by mathematical masters at Rugby School. Their united aim (in connection with Mr. Wilson's two previous parts) is to provide a complete course of geometrical teaching, and so to meet a ...