Elementary Synthetic GeometryJ. Wiley & sons, 1896 - 164 Seiten |
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Seite 19
... symcenter , always one , and only one , symcentral point ; namely , the one on the ray from the given point through the symcenter , which ends the sect bisected by the symcenter . 133. Two figures have a sym- center when , with regard ...
... symcenter , always one , and only one , symcentral point ; namely , the one on the ray from the given point through the symcenter , which ends the sect bisected by the symcenter . 133. Two figures have a sym- center when , with regard ...
Seite 20
George Bruce Halsted. tion [ rotation ] of one figure about the axis [ symcenter ] the two are made to coincide . b ' the 140. If point rays a and b ab · | · CC ' , and from C rays a ' and b ' from C ' , a'b ' , remembering α a ' FIG ...
George Bruce Halsted. tion [ rotation ] of one figure about the axis [ symcenter ] the two are made to coincide . b ' the 140. If point rays a and b ab · | · CC ' , and from C rays a ' and b ' from C ' , a'b ' , remembering α a ' FIG ...
Seite 21
... symcenter ] . 146. The angle between . two sym- metrical straights is bisected by the axis . FIG . 65 . 147. Any ... symcenter for each ; so the non - adjacent or vertical angles are equal , and their bisectors , being symcentral rays ...
... symcenter ] . 146. The angle between . two sym- metrical straights is bisected by the axis . FIG . 65 . 147. Any ... symcenter for each ; so the non - adjacent or vertical angles are equal , and their bisectors , being symcentral rays ...
Seite 43
... symcenter . 263. In any triangle a sect joining a vertex to the mid point of the opposite side is called a median . FIG . 123 . FIG . 124 . 264. A perpendicular from a vertex to the opposite side is called an altitude . 265. The figure ...
... symcenter . 263. In any triangle a sect joining a vertex to the mid point of the opposite side is called a median . FIG . 123 . FIG . 124 . 264. A perpendicular from a vertex to the opposite side is called an altitude . 265. The figure ...
Seite 46
... symcenter is called a parallelo- gram . ( g'm ) . 270. Because it has symcentry , every parallelogram has its opposite sides parallel and equal , its opposite angles equal , and diagonals which bisect each other . Also , every straight ...
... symcenter is called a parallelo- gram . ( g'm ) . 270. Because it has symcentry , every parallelogram has its opposite sides parallel and equal , its opposite angles equal , and diagonals which bisect each other . Also , every straight ...
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altitude angle equal angle-bisector angles opposite axis of symmetry bisects Brocard p't called cenquad circumcenter co-straight coincide common point concurrent concyclic congruent Construction Corollary corresponding diagonal diameter draw end point Engineering equal angles equal sects equal sides equiangular polygon explemental exterior angle figure g-line Geometry given p't given point given straight greater harmonic conjugates harmonic range inscribed inscribed angles intercept intersection point inversely isogonal isogonal conjugates Lemoine p't Lemoine point lune magnitude median mid p't mid point morocco opposite sides orthocenter parallel parallelogram pencil perigon perspective plane polar pole polygon Proof quad quadrant quadrilateral radius rectangle rhombus right angles rotation sect joining semicircle sides equal sphere spherical angle spherical polygon spherical triangle square st's straight angle supplemental symcenter symcentral symmedians symmetrical with regard symtra tangent Theorem third side transversal vertex vertices
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