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 ...

THIS book appears to compare very favourably with most English works of its class. The greater part of it deals with practical solid geometry, including the method of indexed plans; this subject is ...

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 ...

THIS is a really capital book for students of what may be called scholarship standard. It contains, among other things, sections on similarity, transversals, vector geometry, inversion, and coaxal ...