### Contents

 Geometrical Applications of Addition 1 Parallels 12 Multiplication 1 Division 11 Involution 1 Factors and Multiples 1 Fractions 8 Roots of Fractions 26
 Paraboloid and Spheroids 19 Prism Pyramid and Wedge 1 Percentage 12 Denominate Numbers 1 Metric System 22 INSTRUMENTAL DRAWING 1 3 38 21 62

### Popular passages

Page 13 - Thirty days hath September, April. June, and November; All the rest have thirty.one, Save February, which alone Hath twenty.eight; and one day more We add to it one year in four.
Page 1 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Page 12 - TIME 60 seconds (sec.) = 1 minute (min.) 60 minutes = 1 hour (hr.) 24 hours = 1 day (da.) 7 days = 1 week (wk.) 365 days = 1 common year...
Page 27 - RULE. — From half the sum of the three sides subtract each side separately ; multiply the half -sum and the three remainders together ; the square root of the product is the area.
Page 1 - If a product consists of equal factors, it is called a power of one of those equal factors, and one of the equal factors is called a root of the product. The power and the root are named according to the number of equal factors in the product. Thus, 3X3, or 9, is the second power, or square, of 3; 3 X 3 X 3, or...
Page 13 - The area of a parallelogram is equal to the product of its base and its height: A = bx h.
Page 9 - To multiply a decimal by 10, 100, 1000, &c., remove the decimal point as many places to the right as there are ciphers in the multiplier ; and if there be not places enough in the number, annex ciphers.
Page 8 - An improper fraction, is one in which the numerator is equal- to, or greater than the denominator.
Page 17 - In any right triangle the perpendicular from the vertex of the right angle on the hypotenuse divides the triangle into two triangles each similar to the given triangle.