Scientific and practical geometry for self-instruction1879 |
Inni boken
Resultat 1-5 av 41
Side 2
... mean right - lined parallels . Oblique , when changing their distance , and which would meet on the side of the least distance if continued ; thus in Fig . A 3 , the lines CD and EF are oblique . Perpendicular , when with one end ...
... mean right - lined parallels . Oblique , when changing their distance , and which would meet on the side of the least distance if continued ; thus in Fig . A 3 , the lines CD and EF are oblique . Perpendicular , when with one end ...
Side 7
... means the perpendi cular and not the slant height , unless otherwise expressed . Thus in Fig . 1 A od and not ad will be the height or altitude of triangle adc . 18. A Diagonal is a line drawn from one angle of a right - lined figure to ...
... means the perpendi cular and not the slant height , unless otherwise expressed . Thus in Fig . 1 A od and not ad will be the height or altitude of triangle adc . 18. A Diagonal is a line drawn from one angle of a right - lined figure to ...
Side 9
... means that 5 and 7 are to be added together . - ( minus ) , indicates that the number placed after it is to be subtracted from that placed before it ; thus , 7 – 5 means that 5 must be subtracted from 7. The figures might be reversed ...
... means that 5 and 7 are to be added together . - ( minus ) , indicates that the number placed after it is to be subtracted from that placed before it ; thus , 7 – 5 means that 5 must be subtracted from 7. The figures might be reversed ...
Side 10
... means that A is greater than B , ' whilst A < B means that A is less than B. The sign , or the letter S placed horizontally , means " similar to . " 23. Proportions are expressed by colons and double colons as to geometrical proportions ...
... means that A is greater than B , ' whilst A < B means that A is less than B. The sign , or the letter S placed horizontally , means " similar to . " 23. Proportions are expressed by colons and double colons as to geometrical proportions ...
Side 11
... means the square root of 4 × 12 , or 48 , or ✓A.B , the square root of A and B multiplied together . 25. Powers are marked by small figures above the figure or letter ; thus , 62 means the square of 6 ( 36 ) , 63 the cube of 6 ( 216 ) ...
... means the square root of 4 × 12 , or 48 , or ✓A.B , the square root of A and B multiplied together . 25. Powers are marked by small figures above the figure or letter ; thus , 62 means the square of 6 ( 36 ) , 63 the cube of 6 ( 216 ) ...
Vanlige uttrykk og setninger
ab² abcd ac² adjacent angles altitude angles equal angles Sect Application axis bisected centre chord circle circumference consequently construction continued contour corresponding angles cutting deduction demonstration diagonal diameter distance divided division draw arc draw line draw the indefinite drawn ellipse equal angles equal bases equal Sect equal sides equidistant equivalent triangle Euclid example exterior angle external angle four right angles frustrum geometrical operations give greater hypothenuse inches included angle indefinite line isosceles triangle length Let abc let fall line ac line cd mark measure half mode Multiply number of sides oblique opposed angle parallel ruler parallelogram pendicular polygons proof proposition radii ratio rectangle reflex angle rhombus right line rule in Sect secant Sectns segment semicircle set square side ab side ac similar triangles slant height summit supplementary angles tangent third side trapezium triangle abc
Populære avsnitt
Side 14 - If a straight line meets two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...
Side 8 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Side 7 - A circle is a plane figure bounded by a curved line called the circumference, every point of which is equally distant from a point within called the center, Fig.
Side 96 - Any two sides of a triangle are together greater than the third side.
Side 73 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Side 278 - Therefore all the interior angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 14 - Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.
Side 266 - A sphere is a solid, bounded by a curved surface, every part of which is equally distant from a point within, called the centre.
Side 45 - From a given point without a line, to draw a perpendicular to that line. Let AB be the given line, and C the given point. From C draw any oblique line, as Cn.
Side 9 - The sign, + , which is read plus, indicates that the numbers between which it is placed are to be added ; thus, 6 + 4, means, that 4 is to be added to 6.