## An elementary course of practical mathematics, Part 2 |

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acres altitude angle angular points answer axes axis base boundary breadth called centre chord chord of half circle circular Circumf circumference compasses Compute cone construct contains convex surface corresponding cube cubic cylinder describe Determine diagonal diagram diameter dimensions distance divide draw drawn edge ellipse ends equal equilateral triangle EXAMPLE EXERCISES IN CHAPTER feet figure find the Area foot FORMULA four frustum given given Straight Line height hexagonal inches length marked mean measure METHOD miles Multiply nearly NOTE opposite parallel parallelogram perpendicular placed plane points polygon PRACTICAL prism PROB PROBLEM Prop proportion PROPOSITION pyramid radius rectangle regular respectively right-angled triangle round RULE scale sector segment sides similar slant height solid content sphere square Straight Line Table taken THEOREM three sides triangle whole zone

### Popular passages

Page 4 - In a Right-angled Triangle, the side opposite the right angle is called the Hypothenuse ; and the other two sides are called the Legs, and sometimes the Base and Perpendicular.

Page 72 - Square Measure 144 square inches = 1 square foot 9 square feet = 1 square yard 30£...

Page 60 - The side of a square is equal to the square root of half the square of its diagonal.

Page 41 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.

Page 12 - The diameter of a circle is a straight line passing through the centre and terminated both ways by the circumference...

Page 61 - A ladder 40 feet long may be so placed that it will reach a window 33 feet high on one side of the street, and by turning it over without moving its foot it will reach a window 21 feet high on the other side. Find the breadth of the street.

Page 101 - From three times the diameter of the sphere subtract twice the height of the segment; multiply this remainder by the square of the height and the product by 0.5236.

Page 98 - ADD THE LENGTH OF THE EDGE TO TWICE THE LENGTH OF THE BASE, AND MULTIPLY THE SUM BY £ OF THE PRODUCT OF THE HEIGHT OF THE WEDGE AND THE BREADTH OF THE BASE.

Page 78 - From half the sum of the three sides, subtract each side separately; multiply the half sum and the three remainders together, and the square root of the product will be the area required.

Page 5 - A pentagon is a polygon of five sides ; a hexagon, of six sides ; a heptagon, of seven ; an octagon, of eight ; a nonagon, of nine ; a decagon, of ten ; an undecagon, of eleven ; and a dodecagon, of twelve sides.