Elements of Geometry and Conic SectionsHarper, 1849 - 226 sider |
Inni boken
Resultat 1-5 av 44
Side 20
... consequently , each of these an- gles is a right angle ( Def . 10 ) . Therefore , the line bisecting the vertical angle of an isosceles triangle bisects the base at right angles ; and , conversely , the line bisecting the base of an ...
... consequently , each of these an- gles is a right angle ( Def . 10 ) . Therefore , the line bisecting the vertical angle of an isosceles triangle bisects the base at right angles ; and , conversely , the line bisecting the base of an ...
Side 27
... consequently parallel ( Prop . XX . ) . Therefore , if a straight line , & c . Scholium . When a straight line intersects two parallel lines , the in- terior angles on the same side , are those which lie within the parallels , A and on ...
... consequently parallel ( Prop . XX . ) . Therefore , if a straight line , & c . Scholium . When a straight line intersects two parallel lines , the in- terior angles on the same side , are those which lie within the parallels , A and on ...
Side 29
... consequently parallel ( Prop . XX . ) . Therefore , straight lines which are parallel , & c . PROPOSITION XXV . THEOREM . Two parallel straight lines are every where equally distant from each other . Let AB , CD be two parallel straight ...
... consequently parallel ( Prop . XX . ) . Therefore , straight lines which are parallel , & c . PROPOSITION XXV . THEOREM . Two parallel straight lines are every where equally distant from each other . Let AB , CD be two parallel straight ...
Side 33
... consequently , the side AB is parallel to CD ( Prop . XXII . ) . For a like reason , AC is parallel to BD ; hence the quadrilateral ABDC is a par- allelogram . Therefore , if the opposite sides , & c . PROPOSITION XXXI . THEOREM . If ...
... consequently , the side AB is parallel to CD ( Prop . XXII . ) . For a like reason , AC is parallel to BD ; hence the quadrilateral ABDC is a par- allelogram . Therefore , if the opposite sides , & c . PROPOSITION XXXI . THEOREM . If ...
Side 34
... the other , and are consequently equal ; hence the angle AEB will equal the angle AEC , and therefore the di- agonals of a rhombus bisect each other at right angles . BOOK II . RATIO AND PROPORTION . On the Relation 34 GEOMETRY .
... the other , and are consequently equal ; hence the angle AEB will equal the angle AEC , and therefore the di- agonals of a rhombus bisect each other at right angles . BOOK II . RATIO AND PROPORTION . On the Relation 34 GEOMETRY .
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ELEMENTS OF GEOMETRY & CONIC S Elias 1811-1889 Loomis,Making of America Project Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
75 cents ABCD AC is equal allel altitude angle ABC angle ACB angle BAC Anthon's base BCDEF bisected chord circle circumference cone contained convex surface curve described diameter dicular draw drawn ellipse equal angles equal to AC equally distant equiangular equivalent exterior angle foci four right angles frustum greater Hence Prop hyperbola inscribed intersection join latus rectum Let ABC lines AC major axis mean proportional measured by half meet Muslin number of sides ordinate parabola parallelogram parallelopiped pendicular perimeter perpen perpendicular plane MN principal vertex prism PROPOSITION pyramid radii radius ratio rectangle regular polygon right angles Prop Scholium segment Sheep extra side AC similar slant height solid angle sphere spherical triangle square subtangent tangent THEOREM triangle ABC vertex vertices
Populære avsnitt
Side 60 - Any two rectangles are to each other as the products of their bases by their altitudes.
Side 27 - VIf two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the...
Side 11 - A rhombus, is that which has all its sides equal, but its angles are not right angles.
Side 63 - IF a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the' rectangle contained by the parts.
Side 18 - BC common to the two triangles, which is adjacent to their equal angles ; therefore their other sides shall be equal, each to each, and the third angle of the one to the third angle of the other, (26.
Side 10 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it.
Side 15 - If, at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two straight lines shall be in one and the same straight line.
Side 17 - If two triangles have two sides and the included angle of the one, equal to two sides and the included angle of the other, each to each, the two triangles will be equal.
Side 148 - I.), that every section of a sphere made by a plane is a circle.