Elements of Geometry: With, Practical Applications |
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Αποτελέσματα 1 - 5 από τα 63.
Σελίδα 11
X. When a straight line AB is met by another straight line DC , 80 as to make the
adjacent angles ACD , BCD equal to each other , each is called a right - angle .
The А C B line DC , thus meeting the line AB , is said to be perpendicular to AB .
X. When a straight line AB is met by another straight line DC , 80 as to make the
adjacent angles ACD , BCD equal to each other , each is called a right - angle .
The А C B line DC , thus meeting the line AB , is said to be perpendicular to AB .
Σελίδα 12
... A7 complete revolution have caused the A6 line A , B to pass over an angular
magnitude equal to four right - angles . ... space to be divided into 360 equal
portions called degrees , so that 90 degrees will be the measure of a right - angle
.
... A7 complete revolution have caused the A6 line A , B to pass over an angular
magnitude equal to four right - angles . ... space to be divided into 360 equal
portions called degrees , so that 90 degrees will be the measure of a right - angle
.
Σελίδα 13
If two diameters of a circle be drawn F at right - angles with each other , as in the
adjoining figure , it is obvious that the entire space will be divided into four equal
portions , each being a right - angle . Therefore the entire circumference may ...
If two diameters of a circle be drawn F at right - angles with each other , as in the
adjoining figure , it is obvious that the entire space will be divided into four equal
portions , each being a right - angle . Therefore the entire circumference may ...
Σελίδα 14
The ordinary frames of windows and doors , and nearly all architectural
framework , consist of systems of parallel lines at rightangles with each other . All
fabrics produced in the loom consist of two systems of parallel threads , crossing
each ...
The ordinary frames of windows and doors , and nearly all architectural
framework , consist of systems of parallel lines at rightangles with each other . All
fabrics produced in the loom consist of two systems of parallel threads , crossing
each ...
Σελίδα 15
A triangle having a right - angle , is called a right - angled triangle . The side
opposite the right - angle is called the hypothenuse . Thus BAC is a right - angled
triangle , right - angled at A ; the side BC is the hypothenuse . B A XVII . When the
...
A triangle having a right - angle , is called a right - angled triangle . The side
opposite the right - angle is called the hypothenuse . Thus BAC is a right - angled
triangle , right - angled at A ; the side BC is the hypothenuse . B A XVII . When the
...
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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 |