Modern geometry [ed.] with an appendix by W.B. Jack1876 |
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Side iii
... means of training the mind to habits of thought and accurate reasoning ; 2. On account of their industrial and scientific importance . According to current methods of teaching the subject , these two ends are sought by separate and ...
... means of training the mind to habits of thought and accurate reasoning ; 2. On account of their industrial and scientific importance . According to current methods of teaching the subject , these two ends are sought by separate and ...
Side 5
... means of the straight ruler , we can , with pen or pencil , draw a line to represent a straight line on any plane whatever , as , for example , on a sheet of paper stretched upon the drawing - board .. Rulers for drawing usually have ...
... means of the straight ruler , we can , with pen or pencil , draw a line to represent a straight line on any plane whatever , as , for example , on a sheet of paper stretched upon the drawing - board .. Rulers for drawing usually have ...
Side 6
... means of the compasses , to mark off from the greater a part equal to the less . The Measurement of Lines . - When two straight lines are given , we may find which is the longer by applying one to the other , and in the same way we may ...
... means of the compasses , to mark off from the greater a part equal to the less . The Measurement of Lines . - When two straight lines are given , we may find which is the longer by applying one to the other , and in the same way we may ...
Side 7
... means of mea- sures which are either copies of the yard or multiples or parts of the same . = 792 inches , a link xxx FIG . 13 . To measure lines on paper , an ivory scale , divided into inches or parts of an inch , is used . A line ...
... means of mea- sures which are either copies of the yard or multiples or parts of the same . = 792 inches , a link xxx FIG . 13 . To measure lines on paper , an ivory scale , divided into inches or parts of an inch , is used . A line ...
Side 13
... means of this instrument a right angle may be drawn on paper in any position . For example , let it be required to draw from the point M in the straight line , A B , a perpendicular to A B. Place a flat ruler so that its edge lies along ...
... means of this instrument a right angle may be drawn on paper in any position . For example , let it be required to draw from the point M in the straight line , A B , a perpendicular to A B. Place a flat ruler so that its edge lies along ...
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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.