The Carpet-dealer's Guide: A Manual of Practical Information on the Art of Measuring Rooms and Cutting Carpets ...

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Cranston & Stowe, 1891 - 228 páginas
 

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Página 52 - Every circumference is regarded as being divided into 360 equal parts, called degrees. Each degree is divided into 60 equal parts, called minutes, and each minute into 60 seconds. These divisions are indicated by the marks ° ' ". Thus 28 degrees, 17 minutes, and 49 seconds, are written 28° 17
Página 13 - When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of these angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Página 46 - The square described on the hypothenuse of a right-angled triangle is equivalent to the sum of the squares described on the other two sides.
Página 48 - To find the Area of a Trapezoid. RULE. Multiply half the Sum of the two parallel Sides by the perpendicular distance between them, or the sum of the two parallel Sides by half the perpendicular distance ; the Product will be the Area.
Página 18 - It denotes that the quantities between which it is placed are equal to each other. Thus, o=3, denotes that the quantity represented by a is equal to 3.
Página 52 - ... being given. RULE. — Divide the number of rods by 8, multiply the quotient by 5, and remove the decimal point two places to the left. The diameter being given, to find the circumference. RULE. — Multiply the diameter by 3 1-7.
Página 23 - А в be the given straight line, and с the given distance ai; which it is required to draw a straight line parallel to A B. Take any two points, D and E, in the straight line...
Página 17 - The SECTOR of a circle is the part of a circle included between an arc, and the two radii drawn to the extremities of the arc ; as the surface included between the arc AD, and. the two radii CA, CD.
Página 13 - An ACUTE ANGLE is one which is less than a right angle ; as the angle DEF.

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