Plane and Solid GeometryMacmillan, 1902 - 370 σελίδες |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα 11
... triangle ; one of four sides , a quadrilateral . TRIANGLES 62. A triangle having three unequal sides is a scalene tri- angle . An isosceles triangle has two of its sides equal . An equilateral triangle has its three sides equal ...
... triangle ; one of four sides , a quadrilateral . TRIANGLES 62. A triangle having three unequal sides is a scalene tri- angle . An isosceles triangle has two of its sides equal . An equilateral triangle has its three sides equal ...
Σελίδα 12
... triangle to the opposite sides ( produced if necessary ) are called the altitudes of the triangle ; the three bisectors of the angles are ДЛА called the bisectors of the triangle ; and the three lines from the vertices to the midpoints ...
... triangle to the opposite sides ( produced if necessary ) are called the altitudes of the triangle ; the three bisectors of the angles are ДЛА called the bisectors of the triangle ; and the three lines from the vertices to the midpoints ...
Σελίδα 15
... triangle ABC , Z A = Z B , and the points D and be taken in AC and BC so as to make △ ABD = 2 EAB , then BD = = Ex . 40. If two angles of a triangle are equal , the bisectors of th angles are equal . Ex . 41. If , from the ends of the ...
... triangle ABC , Z A = Z B , and the points D and be taken in AC and BC so as to make △ ABD = 2 EAB , then BD = = Ex . 40. If two angles of a triangle are equal , the bisectors of th angles are equal . Ex . 41. If , from the ends of the ...
Σελίδα 18
... triangle whose exterior ABE is a remote interior / BEG , which is impossible . Hence AC and DF are parallel . 81. SCHOLIUM . That the lines AC and DF cannot the side of A and D can be proved by the same method - 82. REMARK . - In order ...
... triangle whose exterior ABE is a remote interior / BEG , which is impossible . Hence AC and DF are parallel . 81. SCHOLIUM . That the lines AC and DF cannot the side of A and D can be proved by the same method - 82. REMARK . - In order ...
Σελίδα 19
... triangle are produced their own lengths through the common vertex , a line joining their ends is parallel to the third side of the triangle . Ex . 51. If in the diagram for Prop . V Z ABE = △ BEF , prove that the bisectors of CBE and ...
... triangle are produced their own lengths through the common vertex , a line joining their ends is parallel to the third side of the triangle . Ex . 51. If in the diagram for Prop . V Z ABE = △ BEF , prove that the bisectors of CBE and ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude angles are equal bisect bisector chord circumference circumscribed cone construct a triangle cylinder diagonals diagram for Prop diameter diedral angles divide draw drawn equiangular equiangular polygon equilateral triangle equivalent exterior angle face angles Find the area Find the radius Find the volume frustum given circle given line given point given triangle Hence HINT homologous homologous sides hypotenuse inches inscribed intersecting isosceles triangle joining the midpoints lateral area lateral edges line joining mean proportional median opposite sides parallel lines parallelogram parallelopiped perimeter perpendicular plane MN polyedral angle polyedron prism PROPOSITION prove Proof quadrilateral radii ratio rectangle regular polygon respectively equal rhombus right angles right triangle SCHOLIUM segment similar triangles sphere spherical polygon spherical triangle square straight line surface tangent THEOREM trapezoid triangle ABC triangle are equal triedral vertex
Δημοφιλή αποσπάσματα
Σελίδα 45 - If two triangles have two sides of one equal respectively to two sides of the other, but the included angle of the first triangle greater than the included angle of the second, then the third side of the first is greater than the third side of the second.
Σελίδα 119 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 180 - 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 31 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 305 - A cylinder is a solid bounded by a cylindrical surface and two parallel planes; the bases of a cylinder are the parallel planes; and the lateral surface is the cylindrical surface.
Σελίδα 337 - A spherical polygon is a portion of the surface of a sphere bounded by three or more arcs of great circles. The bounding arcs are the sides of the polygon ; the...
Σελίδα 250 - A straight line perpendicular to one of two parallel planes is perpendicular to the other also.
Σελίδα 297 - A truncated triangular prism is equivalent to the sum of three pyramids whose common base is the base of the prism, and whose vertices are the three vertices of the inclined section.
Σελίδα 105 - I. When the given point, A, is in the circumference. HINT. — What is the angle formed by a radius and a tangent at its extremity ? II. When the given point, A, is without the circle. \ Construction. Join A, and 0 the center of the given circle. On OA as a diameter, construct a circumference, intersecting the given circumference in B and C.
Σελίδα 276 - An oblique prism is equivalent to a right prism whose base is a right section of the oblique prism, and whose altitude is equal to a lateral edge of the oblique prism. Hyp. GM is a right section of oblique prism AD', and OM ' a right prism whose altitude is equal to a lateral edge of AD'. To prove AD' =s= GM'. Proof. The lateral edges of GM