insider.si.edu

Geometric Model by A. Harry Wheeler, Triangle Transformable into Triangle (Incomplete), Plane Dissection

Click to open image viewer. Hinged Plane Dissection, Two triangles and one quadrilateral that can be arranged as two different triangles or a quadrilateral. CC0 Usage Conditions ApplyClick for more ...
insider.si.edu

Geometric Models – Plane Dissections

To illustrate the Pythagorean Theorem, makers of geometric models have long made models with pieces that could be arranged either as a square with a side equal to the length of the hypotenuse of a ...
BBC

Nets of 3D shapes

The net of a 3D shape is what it looks like if it is opened out flat. There are many types of nets for the different 3D shapes. A net is made from polygons that can be folded and joined to make a ...
Nature

Practical Plane and Solid Geometry for Elementary Students

THIS little book will be found very useful for the teaching of the fundamental principles of geometry to young students. The most important properties of triangles and other plane figures are ...
JSTOR Daily

Some Geometry of the Triangle

Vol. 63, No. 9, Part 2: The Conjugate Coordinate System for Plane Euclidean Geometry (Nov., 1956), pp. 32-50 (19 pages) Published By: Taylor & Francis, Ltd. The Monthly publishes articles, as well as ...