Elements of Geometry: With, Practical Applications |
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Σελίδα 8
Hence , the extremities of lines are points . Also , the place of intersection of two
lines is a point . ( 2. ) The common notion of a point is derived from the extremity
of some slender body , such as the end of a common sewing needle . This being
...
Hence , the extremities of lines are points . Also , the place of intersection of two
lines is a point . ( 2. ) The common notion of a point is derived from the extremity
of some slender body , such as the end of a common sewing needle . This being
...
Σελίδα 9
Another definition of a straight line is as follows : When a line is such , that the
eye being placed near one extremity so as to cause it to conceal the other
extremity , it shall , at the same time , hide from view all other portions of the line ;
then ...
Another definition of a straight line is as follows : When a line is such , that the
eye being placed near one extremity so as to cause it to conceal the other
extremity , it shall , at the same time , hide from view all other portions of the line ;
then ...
Σελίδα 65
In any triangle , the difference of the squares of the two sides is equal to the
difference of the squares of the segments of the base , or of the two lines or
distances included between the extremities of the base and the perpendicular ,
drawn from ...
In any triangle , the difference of the squares of the two sides is equal to the
difference of the squares of the segments of the base , or of the two lines or
distances included between the extremities of the base and the perpendicular ,
drawn from ...
Σελίδα 71
... then , from whatever point in the circumference of the one , lines be drawn to
the extremity of any diameter of the other ... be drawn to the extremities of any
diameter of the smaller circle , the sum of the squares of these lines will be
constant .
... then , from whatever point in the circumference of the one , lines be drawn to
the extremity of any diameter of the other ... be drawn to the extremities of any
diameter of the smaller circle , the sum of the squares of these lines will be
constant .
Σελίδα 76
The straight line joining the extremities of an arc is called chord . The chord is
said to subtend the arc . A 3. The portion of the circle inH cluded by an arc and its
chord , is called a segment . Thus the space FGDF , included by the arc FGD and
...
The straight line joining the extremities of an arc is called chord . The chord is
said to subtend the arc . A 3. The portion of the circle inH cluded by an arc and its
chord , is called a segment . Thus the space FGDF , included by the arc FGD and
...
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Elements of Geometry with Practical Applications George R. Perkins Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude angle base bisect called centre chord circ circle circumference circumscribed coincide common cone consequently construction contained convex corresponding cylinder denote described diagonal diameter difference distance divided double draw equal equilateral equivalent exterior angle extremities figure follows formed four given gives greater hence included inscribed intersection join length less lines drawn magnitude manner mean measured measured by half meet multiplied opposite parallel parallel planes parallelogram parallelopipedon pass perimeter perpendicular plane plane MN polygon portion position prism PROBLEM produced Prop proportional PROPOSITION pyramid radii radius ratio rectangle remain respectively right-angles sector segment shown sides similar solid angle sphere spherical square straight line suppose surface taken tangent THEOREM third triangle ABC vertex VIII whole zone
Δημοφιλή αποσπάσματα
Σελίδα 231 - THE sphere is a solid terminated by a curve surface, all the points of which are equally distant from a point within, called the centre.
Σελίδα 147 - PROBLEM. To inscribe a circle in a given triangle. Let ABC be the given triangle : it is required to inscribe a circle in the triangle ABC.
Σελίδα 17 - 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.
Σελίδα 28 - If two sides and the included angle of the one are respectively equal to two sides and the included angle of the other...
Σελίδα 233 - The volume of a cylinder is equal to the product of its base by its altitude. Let the volume of the cylinder be denoted by V, its base by B, and its altitude by H.
Σελίδα 276 - THEOREM. Two triangles on the same sphere, or on equal spheres, are equal in all their parts, when they have each an equal angle included between equal sides. Suppose the side...
Σελίδα 120 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. D c A' D' Hyp. In triangles ABC and A'B'C', ZA = ZA'. To prove AABC = ABxAC. A A'B'C' A'B'xA'C' Proof. Draw the altitudes BD and B'D'.
Σελίδα 18 - If equals be added to unequals, the wholes are unequal. V. If equals be taken from unequals, the remainders are unequal. VI. Things which are double of the same, are equal to one another.
Σελίδα 232 - A spherical triangle is a portion of the surface of a sphere, bounded by three arcs of great circles.
Σελίδα 96 - 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.
Πληροφορίες βιβλιογραφίας
| Τίτλος | Elements of Geometry: With, Practical Applications |
| Συγγραφέας | George Roberts Perkins |
| Εκδότης | D. Appleton and Company, 1850 |
| Πρωτότυπο από | Πανεπιστήμιο Χάρβαρντ |
| Ψηφιοποιήθηκε στις | 1 Μαρ. 2007 |
| Μέγεθος | 320 σελίδες |
| Εξαγωγή αναφοράς | BiBTeX EndNote RefMan |