Modern geometry [ed.] with an appendix by W.B. Jack1876 |
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Side iii
... similar work about seven years ago ; but subsequent experience in teaching young pupils , together with the progress lately made in the determination of improved methods of teaching Geometry , as well as the altered requirements of ...
... similar work about seven years ago ; but subsequent experience in teaching young pupils , together with the progress lately made in the determination of improved methods of teaching Geometry , as well as the altered requirements of ...
Side viii
... Similar Figures Definition - The Panto- graph To lay down Field Plans with the Plane Table Ratio of Similar Figures . 99 PAGE XIX . XX . 217 FOR EXERCISE SECT . V. Proportionals in the Circle .... Segments of Secants- Secants of Two ...
... Similar Figures Definition - The Panto- graph To lay down Field Plans with the Plane Table Ratio of Similar Figures . 99 PAGE XIX . XX . 217 FOR EXERCISE SECT . V. Proportionals in the Circle .... Segments of Secants- Secants of Two ...
Side 14
... similar purposes , which we are about to describe , great care must be taken to make the right angle true at first , and to fix the parts so that it may remain true . To test a set - square , first see that the edges are quite straight ...
... similar purposes , which we are about to describe , great care must be taken to make the right angle true at first , and to fix the parts so that it may remain true . To test a set - square , first see that the edges are quite straight ...
Side 26
... similar process we may mark upon a circumference an arc of a given number of degrees . The protractor is used in the same manner for measuring an angle . To test the correctness of a protractor , it is sufficient to use different parts ...
... similar process we may mark upon a circumference an arc of a given number of degrees . The protractor is used in the same manner for measuring an angle . To test the correctness of a protractor , it is sufficient to use different parts ...
Side 27
... similar to the first . crease in the paper forms a straight line , which is called the symmetrical axis , or line of symmetry of the whole figure ; and the two parts of the figure are said to be symmetrical with regard to this axis . It ...
... similar to the first . crease in the paper forms a straight line , which is called the symmetrical axis , or line of symmetry of the whole figure ; and the two parts of the figure are said to be symmetrical with regard to this axis . It ...
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Modern Geometry [Ed.] with an Appendix by W.B. Jack Richard Wormell Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
A B and C D A B C D adjacent angles alternate angles angles equal angular points base bisector centre chord circumference circumscribing circle Construct a triangle contra-positive converse decagon describe a circle diameter distance divided draw a straight extremities figure fixed point fulfils the given given angle given circle given condition given straight line gonals greater Hence hypothenuse inches inscribed inscribed angle inscribed circle interior angles isosceles triangle less Let A B C line A B locus of points magnitudes middle points number of sides opposite angles opposite sides parallel parallelogram perpendicular point of contact point of intersection PROBLEM propositions proved quadrilateral ratio rect rectangle contained regular polygon respectively equal rhombus right angles right-angled triangle segment semicircle side opposite square on A B tangent termed Theo THEOREMS ON CHAPTER triangles are equal vertical angle
Populære avsnitt
Side 242 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Side 240 - If a straight line be divided into any two parts, four times the rectangle contained by the whole line, and one of the parts, together with the square of the other part, is equal to the square of the straight line which is made up of the whole and that part.
Side 240 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Side 242 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Side 242 - If from the vertical angle of a triangle a straight line be drawn perpendicular to the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the perpendicular and the diameter of the circle described about the triangle.
Side 241 - If the first has to the second the same ratio which the third has to the fourth...
Side 240 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Side 242 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.
Side 18 - 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 239 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity.