Elements of Drawing and Mensuration Applied to the Mechanic Arts: A Book for the Instruction and Use of Practical MenBarnes, 1846 - 240 σελίδες |
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Σελίδα 16
... Hence , all right angles are equal to each other . 17. What is an acute angle ? An acute angle is less than a right angle . Thus , DBC is an acute angle . 18. What is an obtuse angle ? An obtuse angle is greater than a right angle ...
... Hence , all right angles are equal to each other . 17. What is an acute angle ? An acute angle is less than a right angle . Thus , DBC is an acute angle . 18. What is an obtuse angle ? An obtuse angle is greater than a right angle ...
Σελίδα 18
... Hence , one right angle contains 90 degrees , two right angles 180 degrees , three right angles 270 degrees , and four right angles 360 degrees . 29. What is one quarter of the circumference called ? — one half of it ? One quarter of ...
... Hence , one right angle contains 90 degrees , two right angles 180 degrees , three right angles 270 degrees , and four right angles 360 degrees . 29. What is one quarter of the circumference called ? — one half of it ? One quarter of ...
Σελίδα 20
... Hence , the perimeter of a polygon is the sum of all its sides . 4. Name the different kinds of polygons . A polygon of three sides , is called a triangle . A polygon of four sides , is called a quadrilateral . A polygon of five sides ...
... Hence , the perimeter of a polygon is the sum of all its sides . 4. Name the different kinds of polygons . A polygon of three sides , is called a triangle . A polygon of four sides , is called a quadrilateral . A polygon of five sides ...
Σελίδα 28
... Hence , it follows , that when an angle at the centre and an angle at the circumference stand on the same arc BD , the angle at the centre will be double the angle at the circumference . 17. What is the sum of the three an- gles of any ...
... Hence , it follows , that when an angle at the centre and an angle at the circumference stand on the same arc BD , the angle at the centre will be double the angle at the circumference . 17. What is the sum of the three an- gles of any ...
Σελίδα 44
... hence there will be two triangles , AH BH D DEF and DEG , either of which will satisfy all the con- ditions of the problem . 37. If the adjacent sides of a parallelogram , with the angle which they contain , are given , how do you ...
... hence there will be two triangles , AH BH D DEF and DEG , either of which will satisfy all the con- ditions of the problem . 37. If the adjacent sides of a parallelogram , with the angle which they contain , are given , how do you ...
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Elements of Drawing and Mensuration Applied to the Mechanic Arts. a Book for ... Charle Davies Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
12 feet 20 feet 9 inches ABCD altitude axis bisect body breadth called cavetto centre of gravity chains chord circular sector circumference cone convex surface cornice cottage cubic feet cubic foot cubic ft cubic inches curve cylinder decimal describe dimensions distance divided draw drawn ellipse entablature entire surface equal equilateral triangle EXAMPLES feet 6 inches figure find the area find the solidity frustum geometrical given line given point half Hence horizontal lines inscribed length lower base measure moulding Multiply nonagon object oblique elevation oblique lines ovolo parallel parallelogram pentagon perpendicular plane of projection polygon prism pulley pyramid quadrilateral radius rectangle regular represent Required the area right angles roof scale secant line segment shade side slant height solid content solid ft specific gravity sphere square feet square pyramid square yards straight line thickness upper base vertical
Δημοφιλή αποσπάσματα
Σελίδα 17 - Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.
Σελίδα 111 - The area of a rectangle is equal to the product of its base and altitude. Given R a rectangle with base b and altitude a. To prove R = a X b. Proof. Let U be the unit of surface. .R axb U' Then 1x1 But - is the area of R.
Σελίδα 170 - A zone is a portion of the surface of a sphere, included between two parallel planes which form its bases.
Σελίδα 149 - Multiply the area of the base by the altitude, and the product will be the solidity. 1. What is the solidity of a cylinder 8 feet in length and 2 feet in diameter?
Σελίδα 172 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.
Σελίδα 225 - An equilibrium is produced in all the levers, when the weight multiplied by its distance from the fulcrum is equal to the product of the power multiplied by its distance from the fulcrum. That...
Σελίδα 111 - The area of a triangle is equal to half the product of the base and height.
Σελίδα 23 - The square described on the hypothenuse of a rightangled triangle is equal to the sum of the squares described on the other two sides.
Σελίδα 240 - As the tabular specific gravity of the body, Is to its weight in avoirdupois ounces, So is one cubic foot^ or 1728 cubic inches, To its content in feet, or inches, respectively.
Σελίδα 125 - Similar figures, are those that have all the angles of the one equal to all the angles of the other, each to each, and the sides about the equal angles proportional.