Plane and Solid GeometryGinn, 1904 - 473 sider |
Inni boken
Resultat 1-5 av 71
Side 8
... segment of the line . 53. For brevity , we say " the line AB , " to designate a seg- ment of a line limited by the points A and B. 54. If a line is considered as extending from a fixed point , this point is called the origin of the line ...
... segment of the line . 53. For brevity , we say " the line AB , " to designate a seg- ment of a line limited by the points A and B. 54. If a line is considered as extending from a fixed point , this point is called the origin of the line ...
Side 9
... segment AB ; and from B towards A , which is expressed by BA , and read seg- ment BA . 56. If the magnitude of a given line is changed , it becomes longer or shorter . = Thus ( Fig . 5 ) , by prolonging AC to B we add CB to AC , and AB ...
... segment AB ; and from B towards A , which is expressed by BA , and read seg- ment BA . 56. If the magnitude of a given line is changed , it becomes longer or shorter . = Thus ( Fig . 5 ) , by prolonging AC to B we add CB to AC , and AB ...
Side 19
... segments from the foot of the perpendicular , are equal and make equal angles with the perpendicular . A- -B E F K Let CF be a perpendicular to the line AB , and CE and CK two straight lines cutting off on AB equal segments FE and FK ...
... segments from the foot of the perpendicular , are equal and make equal angles with the perpendicular . A- -B E F K Let CF be a perpendicular to the line AB , and CE and CK two straight lines cutting off on AB equal segments FE and FK ...
Side 20
... segments from the foot of the 1 , make equal with the 1 ) . Since PDP ' is not a straight angle , PDC , the half of PDP ' , is not a right angle . .. PD is not 1 to AB . Q. E. D. . PROPOSITION VII . THEOREM . 97. The perpendicular is ...
... segments from the foot of the 1 , make equal with the 1 ) . Since PDP ' is not a straight angle , PDC , the half of PDP ' , is not a right angle . .. PD is not 1 to AB . Q. E. D. . PROPOSITION VII . THEOREM . 97. The perpendicular is ...
Side 21
... segments from the foot of the 1 , are equal ) . .. PD + DP ' = 2 PD , PC + CP ' 2 PC . = and But Const . PC + CP ' < PD + DP ' . $ 49 .. 2 PC < 2 PD . .. PC < PD . Ax . 7 Q. E. D. 98. COR . The shortest line that can be drawn from a ...
... segments from the foot of the 1 , are equal ) . .. PD + DP ' = 2 PD , PC + CP ' 2 PC . = and But Const . PC + CP ' < PD + DP ' . $ 49 .. 2 PC < 2 PD . .. PC < PD . Ax . 7 Q. E. D. 98. COR . The shortest line that can be drawn from a ...
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Vanlige uttrykk og setninger
ABCDE AC² altitude apothem axis bisector bisects called centre chord circumference circumscribed coincide common construct curve denote diagonals diameter dihedral angles distance divided draw ellipse equidistant equilateral triangle equivalent face angles feet Find the area Find the locus frustum given circle given line given point given straight line given triangle greater Hence homologous homologous sides hypotenuse inches intersection lateral area lateral edges length limit middle point number of sides parallel planes parallelogram parallelopiped perimeter perpendicular plane MN polyhedral angle polyhedron prism prismatoid Proof prove Q. E. D. PROPOSITION radii radius ratio rectangle regular polygon regular pyramid respectively right angle right circular right triangle secant segments similar slant height sphere spherical polygon spherical triangle square surface tangent tetrahedron THEOREM trapezoid triangle ABC triangular prism trihedral vertex vertices
Populære avsnitt
Side 44 - If two triangles have two sides of the one equal, respectively, to two sides of the other, but the included angle of the first greater than the included angle of the second, then the third side of the first is greater than the third side of the second.
Side 276 - If two planes are perpendicular to each other, a straight line drawn in one of them perpendicular to their intersection is perpendicular to the other plane.
Side 52 - If the opposite sides of a quadrilateral are equal, the figure is a parallelogram.
Side 43 - If two angles of a triangle are unequal, the sides opposite are unequal, and the greater side is opposite the greater angle.
Side 193 - 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. To prove that Proof. A Let the triangles ABC and ADE have the common angle A. A ABC -AB X AC Now and A ADE AD X AE Draw BE.
Side 362 - A sphere is a solid bounded by a surface all points of which are equally distant from a point within called the centre.
Side 171 - In any triangle the product of two sides is equal to the product of the diameter of the circumscribed circle by the altitude upon the third side.
Side 73 - The sum of the perpendiculars dropped from any point within an equilateral triangle to the three sides is constant, and equal to the altitude.
Side 385 - Hence the two last are right angles ; hence the arc drawn from the vertex of an isosceles spherical triangle to the middle of the base, is at right angles to the base, and bisects the vertical angle.
Side 77 - PERIPHERY of a circle is its entire bounding line ; or it is a curved line, all points of which are equally distant from a point within called the centre.