Mensuration for Beginners: With Numerous ExamplesMacmillan and Company, 1869 - 296 páginas |
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Página 2
... 4. An angle is the inclination of two straight lines to one another which meet together , but are not in the same straight line . Thus the two straight lines AO , BO , which 2 DEFINITIONS . FIRST SECTION GEOMETRY Definitions.
... 4. An angle is the inclination of two straight lines to one another which meet together , but are not in the same straight line . Thus the two straight lines AO , BO , which 2 DEFINITIONS . FIRST SECTION GEOMETRY Definitions.
Página 3
... meet at O , form an angle there . The angle is not altered by altering the lengths of the straight lines which form it : thus CO and DO form the same angle as AO and BO . D C B 5. If there is only one angle formed at a point , the angle ...
... meet at O , form an angle there . The angle is not altered by altering the lengths of the straight lines which form it : thus CO and DO form the same angle as AO and BO . D C B 5. If there is only one angle formed at a point , the angle ...
Página 4
... meet . D B 10. A rectilineal figure is a figure which is bounded by straight lines ; the boundaries of the figure are called sides . A triangle is a rectilineal figure with three sides . A quadrilateral is a rectilineal figure with four ...
... meet . D B 10. A rectilineal figure is a figure which is bounded by straight lines ; the boundaries of the figure are called sides . A triangle is a rectilineal figure with three sides . A quadrilateral is a rectilineal figure with four ...
Página 14
... meet , produced if necessary , at E ; join BC and E B AD : then the triangles AED and BEC will be similar , the angles EAD and ECB being equal , and the angles EDA and EBC being equal . See Art . 32 . III . PROBLEMS . 39. We shall now ...
... meet , produced if necessary , at E ; join BC and E B AD : then the triangles AED and BEC will be similar , the angles EAD and ECB being equal , and the angles EDA and EBC being equal . See Art . 32 . III . PROBLEMS . 39. We shall now ...
Página 18
... meet the circumference again at F. Join CF. Then CF will be at right angles to AB . 46 . A E F D B To draw a perpendicular to a given straight line from a given point without it . Let AB be the given straight line , and C the given ...
... meet the circumference again at F. Join CF. Then CF will be at right angles to AB . 46 . A E F D B To draw a perpendicular to a given straight line from a given point without it . Let AB be the given straight line , and C the given ...
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Términos y frases comunes
12 feet 12 inches 20 inches 24 feet 9 inches ABCD acres breadth centre chains chord of half circle circumference cubic feet cubic foot cubic inches curved surface diagonal distance divided edge ends Examples feet 6 inches feet 9 feet long feet respectively find the area find the cost find the height find the length Find the number find the radius find the volume following dimensions frustum half the arc height 2 feet hypotenuse inches long inches wide multiply number of cubic parallel sides parallelogram perimeter perpendicular plane parallel polygon prism prismoid pyramid radii radius of base rectangle rectangular parallelepiped rectilineal figure regular polygon rhombus right angles right circular cone right circular cylinder Rule of Art sector segment shew slant height solid solve some exercises sphere square feet square inches square root square yard superficial primes Suppose trapezoid wedge whole surface yards 1 foot yards 2 feet
Pasajes populares
Página 4 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Página 124 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 17 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line : it is required to draw a straight line through the point A parallel to the straight line BC. In BC take any point g D, and join AD ; at the point A in the straight line AD, make the angle DAE equal to the angle
Página 74 - 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.
Página 18 - To draw a straight line perpendicular to a given straight line of an unlimited length, from a given point without it. Let AB be the given straight line, which may be produced to any length both ways, and let c be a point without it.
Página 7 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Página 4 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Página 272 - The content of a cistern is the sum of two cubes whose edges are 10 inches and 2 inches, and the area of its base is the difference of two squares whose sides are 1¿ and If feet.
Página 155 - To the areas of the two ends of the frustum add the square root of their product ; multiply the sum by the height of the frustum ; and one-third of the product will be the volume.
Página 230 - Add into one sum 39 times the square of the bung diameter, 25 times the square of the head diameter, and 26 times the product of the...