01.02.2013 Views

MYSTERIES OF THE EQUILATERAL TRIANGLE - HIKARI Ltd

MYSTERIES OF THE EQUILATERAL TRIANGLE - HIKARI Ltd

MYSTERIES OF THE EQUILATERAL TRIANGLE - HIKARI Ltd

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

232 Index<br />

oriented triangles 70<br />

origami 127<br />

orthic triangle 54<br />

orthocenter 39, 46<br />

Ostrowski, Alexander 173<br />

Oughtred, William 148<br />

Our Lord 18<br />

Oxford University 150<br />

Pach, J. 55<br />

Pacioli, Luca 11, 153<br />

packings v, 44<br />

Padovan sequence 70<br />

Padovan spirals 70<br />

Padovan whorl 70<br />

pagoda 6-7<br />

paper folding 127<br />

palimpsest 151<br />

Pappus’ Centroid Theorem 152<br />

Pappus’ Hexagon Theorem 152<br />

Pappus of Alexandria 13, 151-152,<br />

183<br />

Pappus’ Problem 152<br />

parallelogram properties 37<br />

Parthenon 9<br />

partition 72-73<br />

partridge<br />

number 72<br />

tiling v, 72<br />

Pascal, Blaise 58, 157, 159, 184<br />

Pascal’s Law of Pressure 159<br />

Pascal’s Mystic Hexagram Theorem<br />

159<br />

Pascal’s Triangle 58-59, 74, 159<br />

Pascal’s Wager 159<br />

Pauca sed matura 164<br />

pedal mapping 54<br />

pedal triangle 38-39, 54, 118, 127<br />

Pedersen, Jean J. 117<br />

Pedoe, Dan 31<br />

peg solitaire 169<br />

Pell, John 148<br />

Pell’s equation 157<br />

Peloponnesian War 149<br />

pengala 5<br />

pentagon 107<br />

pentagonal dipyramid 15<br />

Perelman, Grigory 170<br />

perfect<br />

coloring 67<br />

tiling 70<br />

triangulation 70<br />

periodic orbit 118-120<br />

Perplexities 181<br />

Pestalozzi, J. H. 165<br />

Peterhouse, Cambridge 168<br />

Pfaff, J. F. 164<br />

Philosophia Sacra 9<br />

Picard, Émile 166<br />

Pinchasi, R. 55<br />

ping-pong 178<br />

plaited polyhedra 117<br />

planar soap bubble clusters 52<br />

plastic<br />

number 70<br />

pentagon 70<br />

Platonic solid 11-13, 117, 150<br />

Platonic triangles 11<br />

Platonism 150<br />

Plato of Athens 11, 149, 183<br />

Plato’s Academy 149-150<br />

playscape (triangular) 195<br />

Poincaré-Bendixson Theorem 170<br />

Poincaré Conjecture 170<br />

Poincaré disk 75<br />

Poincaré group 170<br />

Poincaré, Henri 166, 170, 185<br />

Poincaré inequality 170<br />

Poincaré-Linstedt method 170<br />

Poincaré map 170<br />

Poincaré metric 170<br />

Poincaré, Raymond 170<br />

Polydeuces 83<br />

polygonal dissections 106-107

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!