Plane and Solid Geometry: To which is Added Plane and Spherical Trigonometry and Mensuration : Accompanied with All the Necessary Logarithmic and Trigonometric Tables |
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Page v
... parallel lines 24 Of triangles ... 28 Of quadrilaterals .. 33 Additional Theorems of triangles 37 SECOND BOOK ... parallels Construction of polygons .. Of contact .... 47 51 57 61 66 69 Of common measure 70 Definitions .... Proportional ...
... parallel lines 24 Of triangles ... 28 Of quadrilaterals .. 33 Additional Theorems of triangles 37 SECOND BOOK ... parallels Construction of polygons .. Of contact .... 47 51 57 61 66 69 Of common measure 70 Definitions .... Proportional ...
Page 9
... Parallel lines are those which have the same direction . XI . An Angle is the difference in direction of two straight lines meeting or crossing each other . The Vertex of the angle is the point where its sides meet . XII . When one ...
... Parallel lines are those which have the same direction . XI . An Angle is the difference in direction of two straight lines meeting or crossing each other . The Vertex of the angle is the point where its sides meet . XII . When one ...
Page 11
... parallel , the figure is called a parallelogram . XXVI . When the 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 ...
... parallel , the figure is called a parallelogram . XXVI . When the 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 ...
Page 11
... parallel to another . XIII . Only one straight line can be drawn joining two given points . XIV . Straight lines which are parallel to the same line are parallel to each other . POSTULATES . I. Let it be granted that a straight line may ...
... parallel to another . XIII . Only one straight line can be drawn joining two given points . XIV . Straight lines which are parallel to the same line are parallel to each other . POSTULATES . I. Let it be granted that a straight line may ...
Page 13
... parallel to another . XIII . Only one straight line can be drawn joining two given points . XIV . Straight lines which are parallel to the same line are parallel to each other . POSTULATES . I. Let it be granted that a straight line may ...
... parallel to another . XIII . Only one straight line can be drawn joining two given points . XIV . Straight lines which are parallel to the same line are parallel to each other . POSTULATES . I. Let it be granted that a straight line may ...
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Common terms and phrases
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
Popular passages
Page 113 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 31 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
Page 112 - ALSO THE AREA OF THE TRIANGLE FORMED BY THE CHORD OF THE SEGMENT AND THE RADII OF THE SECTOR. THEN...
Page 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.
Page 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'.
Page 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.
Page 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.
Page 174 - The radius of a sphere is a straight line, drawn from the centre to any point of the...
Page 107 - ... similar figures are to each other as the squares of their homologous sides.
Page 180 - Every section of a sphere, made by a plane, is a circle.