Plane and Solid Geometry: To which is Added Plane and Spherical Trigonometry and Mensuration : Accompanied with All the Necessary Logarithmic and Trigonometric TablesD. Appleton, 1860 - 443 σελίδες |
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Αποτελέσματα 1 - 5 από τα 48.
Σελίδα 10
... four sides is called a quadrilateral ; that of five sides is called a pentagon ; that of six sides is called a hexagon ; one of seven sides is called a heptagon ; one of eight sides an octagon ; one of nine sides a nonagon , and so on ...
... four sides is called a quadrilateral ; that of five sides is called a pentagon ; that of six sides is called a hexagon ; one of seven sides is called a heptagon ; one of eight sides an octagon ; one of nine sides a nonagon , and so on ...
Σελίδα 11
... four angles of a parallelo- gram are right angles , the figure is called a rectangle . XXVII . When the four sides of a rectangle are equal , the figure is called a square . XXVIII . When the four sides of a parallelogram are equal ...
... four angles of a parallelo- gram are right angles , the figure is called a rectangle . XXVII . When the four sides of a rectangle are equal , the figure is called a square . XXVIII . When the four sides of a parallelogram are equal ...
Σελίδα 14
... four angles , formed by the intersection of two straight lines , is a right angle , the remaining three angles will each be right , and the two lines will be mutually per- pendicular . When the angles are not right there will be two ...
... four angles , formed by the intersection of two straight lines , is a right angle , the remaining three angles will each be right , and the two lines will be mutually per- pendicular . When the angles are not right there will be two ...
Σελίδα 15
... four right angles . Cor . IV . If two adjacent angles , ADC and BDC , are supplementary , their exterior sides . AD and BD will form one and the same line . F A E D C B Scholium . Since a straight line has two different directions ...
... four right angles . Cor . IV . If two adjacent angles , ADC and BDC , are supplementary , their exterior sides . AD and BD will form one and the same line . F A E D C B Scholium . Since a straight line has two different directions ...
Σελίδα 16
... four right angles . For , if from any point in the same plane , straight lines be drawn parallel respectively to the sides of the figure , the angles contained by the straight lines about that point will be equal to the ex- terior ...
... four right angles . For , if from any point in the same plane , straight lines be drawn parallel respectively to the sides of the figure , the angles contained by the straight lines about that point will be equal to the ex- terior ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
a+b+c ABCD altitude angles equal apothem base bisecting centre chord circle circumference circumscribed circle circumscribed polygon cone consequently corresponding cosec Cosine Cotang cubic cylinder decimal denote diameter dicular distance divided draw drawn equally distant equation exterior angles feet figure frustum given angle given line gives greater half hence hypotenuse inches included angle inscribed circle intersection logarithm measure middle point multiplied number of sides opposite parallel parallelogram parallelopipedon pendicular perimeter perpen perpendicular plane MN polyedral angle polyedron prism PROBLEM proportion pyramid quadrant quadrilateral radii radius ratio rectangle regular polygon respectively equal right angles right-angled triangle Scholium secant similar similar triangles Sine slant height solid sphere spherical triangle square straight line subtract suppose surface Tang Tangent THEOREM three sides triangle ABC volume
Δημοφιλή αποσπάσματα
Σελίδα 113 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Σελίδα 31 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
Σελίδα 112 - ALSO THE AREA OF THE TRIANGLE FORMED BY THE CHORD OF THE SEGMENT AND THE RADII OF THE SECTOR. THEN...
Σελίδα 33 - 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 80 - 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. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
Σελίδα 139 - If a straight line is perpendicular to each of two straight lines at their point of intersection, it is perpendicular to the plane of those lines.
Σελίδα 15 - The sum of all the angles of a polygon is equal to twice as many right angles as the polygon has sides, less two.
Σελίδα 174 - The radius of a sphere is a straight line, drawn from the centre to any point of the...
Σελίδα 107 - ... similar figures are to each other as the squares of their homologous sides.
Σελίδα 180 - Every section of a sphere, made by a plane, is a circle.