Elements of Geometry and Trigonometry: With Applications in MensurationA.S. Barnes, 1886 - 324 σελίδες |
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Αποτελέσματα 1 - 5 από τα 38.
Σελίδα 12
... suppose the circumference of a circle to be divided into 360 degrees , beginning at the point B. If through the point of division marked 40 , we draw CE , then , the angle ECB will be equal to 40 degrees . If CF were drawn through 180 ...
... suppose the circumference of a circle to be divided into 360 degrees , beginning at the point B. If through the point of division marked 40 , we draw CE , then , the angle ECB will be equal to 40 degrees . If CF were drawn through 180 ...
Σελίδα 17
... suppose the part AEB to be turn- ed around AB , until it shall fall on the part ADB . The curve AEB will then exactly coincide with the curve ADB , or else there would be some point in the curve AEB or ADB , unequally distant from the ...
... suppose the part AEB to be turn- ed around AB , until it shall fall on the part ADB . The curve AEB will then exactly coincide with the curve ADB , or else there would be some point in the curve AEB or ADB , unequally distant from the ...
Σελίδα 18
... suppose a semicircumference to be described . Then , the angle DCB will be measured by the arc BD , and the angle DCA by the arc AD . But the sum of the two arcs is equal to a semicir- cumference hence , the sum of the two angles is ...
... suppose a semicircumference to be described . Then , the angle DCB will be measured by the arc BD , and the angle DCA by the arc AD . But the sum of the two arcs is equal to a semicir- cumference hence , the sum of the two angles is ...
Σελίδα 19
... suppose the side AC , of the triangle ACB , to be placed on DF , so that the extremity C shall fall on the extremity F : then , since the sides are equal A will fall on D. But since the angle C is equal to the angle F , the line CB Of ...
... suppose the side AC , of the triangle ACB , to be placed on DF , so that the extremity C shall fall on the extremity F : then , since the sides are equal A will fall on D. But since the angle C is equal to the angle F , the line CB Of ...
Σελίδα 21
... suppose the line CD to be drawn dividing the angle C into two equal parts . Then , the two triangles ACD and DCB , have two sides and the included angle of the one equal to two sides and the in- cluded angle of the other , each to each ...
... suppose the line CD to be drawn dividing the angle C into two equal parts . Then , the two triangles ACD and DCB , have two sides and the included angle of the one equal to two sides and the in- cluded angle of the other , each to each ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
altitude angles equal base multiplied bisect called centre chains chord circle whose diameter circular sector circumference column comp cone consequently convex surface Cosine Cosine D Cotang cubic cylinder decimal diagonal dicular distance divided draw drawn equal Bk equal to half equivalent EXAMPLES feet figure find the area frustum greater half the arc half the product hence horizontal hypothenuse inches included angle inscribed intersection Let ABCD logarithm lower base measured by half Mensuration of Surfaces number of sides opposite angles outward angle parallel parallelogram parallelopipedon pendicular pentagonal pyramid perimeter perpen perpendicular plane prism PROBLEM proportion pyramid quadrilateral radii radius ratio rectangle regular polygon Required the area rhombus right angled triangle right angles Bk S-ABCDE segment side AC similar similar triangles slant height sphere straight line suppose Tang tangent THEOREM triangle ABC upper base yards
Δημοφιλή αποσπάσματα
Σελίδα 44 - Let ABC be a triangle, of which the side AC is greater than the side AB; the angle ABC shall be greater than the angle BCA.
Σελίδα 11 - A circle (Fig. 38) is a figure bounded by a curved line, called the circumference, every point of which is equally distant from a point within, called the center.
Σελίδα 12 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Σελίδα 59 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Σελίδα 130 - ... or cylinder be cut by a plane parallel to the base, the section is a figure parallel and similar to the base. The one point a...
Σελίδα 209 - Being on a horizontal plane, and wanting to ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of the tower 51° ; then measuring in a direct line 180 feet farther from the hill, the angle of elevation of the top of the tower Cway 33° 45' ; required the height of the tower.
Σελίδα 58 - If two triangles have two sides, and the included angle of the one equal to two sides and the included angle of the other, they are equal in all their parts.
Σελίδα 159 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.
Σελίδα 70 - To express that the ratio of A to B is equal to the ratio of C to D, we write the quantities thus : A : B : : C : D; and read, A is to B as C to D.
Σελίδα 33 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.