# SHAPING up: SHAPES with many SIDES

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- SHAPING up: The 3rd Dimension. // Think of a Number;2005, p58
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It focuses on various shapes with three dimensions. A tetrahedron is comprised of four equilateral triangles like a pyramid except that its base is triangular instead of square. A cube is made...

- SHAPING up: Footballs and buckyballs. // Think of a Number;2005, p60
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It discusses icosahedrons. Such shape is composed of 20 hexagons and 12 pentagons. A football has the same characteristics although the other panels can be different in terms of shape and...

- SHAPING up: SHAPES with 3 SIDES. // Think of a Number;2005, p52
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It deals with a polygon with three sides known as the triangle. It mentions that triangles are said to be the simplest polygons and the building blocks for all the other polygons. Even during...

- Where do NUMBERS come from?: You can count on PEOPLE. // Think of a Number;2005, p12
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It tackles the 900 different counting systems adopted by tribes in Papua New Guinea as well as that of the ancient Babylonians. It notes that many of these tribes count past their fingers and do...

- Where do NUMBERS come from?: Making a mark. // Think of a Number;2005, p14
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It discusses the counting system devised by ancient Babylonians as they counted beyond their hands. It presents information on the clay tokens that they used as record of deals and how they kept...

- Where do NUMBERS come from?: INDIAN numbers. // Think of a Number;2005, p20
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It discusses the counting system devised by the ancient Indians. It notes that the Indians were able to invent the place system wherein number symbols were matched with the rows on an abacus as...

- MAGIC numbers: the Golden RATIO. // Think of a Number;2005, p34
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It discusses the concept of phi which the famous painter Leonardo da Vinci called as the "golden ratio." It presents how it is derived and its numerical value. It also elaborates on the strange...

- MAGIC numbers: BIG NUMBERS. // Think of a Number;2005, p36
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It discusses big numbers, what they are called, and how they are written. It mentions the concept of powers or exponents which indicates the number of times a number is to be multiplied by...

- MAGIC numbers: PRIME suspects. // Think of a Number;2005, p40
A chapter from the book "Think of a Number: A Fascinating Look at the World of Numbers" is presented. It provides an analysis of prime numbers. It states that a prime number is defined as a whole number that cannot be divided into other whole numbers except for 1. Some mathematicians reportedly...