## A Textbook on Sheet-metal Pattern Drafting, Volume 1 |

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A B C adjacent angles altitude arc A B base border line called chord ciphers circle circumference cone contains convex surface correct to four correct to three cube root cubic foot cylinder decimal places decimal point denomination describe diameter digit distance divided division divisor draw drawn edge ellipse Example.—Find EXAMPLES FOR PRACTICE Find the area find the number four figures fraction frustum given number Hence horizontal line hypotenuse improper fraction inches long inscribed angle intersecting isosceles triangle line A B measure minuend multiplicand multiplying number of degrees number of units one-half parallel parallelogram pencil perpendicular Plate polygon pounds prism quotient ratio rectangle regular polygon right angle right triangle rule side slant height Solution Solution.—The square inches square root straight line subtracting subtrahend three figures trial divisor triangle ABC vertex volume weight

### Popular passages

Page 31 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.

Page 11 - 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 xxxv - 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 10 - 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 lxxiii - The area of a parallelogram is equal to the product of its base and its height: A = bx h.

Page lxix - 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 49 - 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.