Scientific and practical geometry for self-instruction1879 |
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Αποτελέσματα 1 - 5 από τα 74.
Σελίδα xi
... third side , are proved ( also by Sect . 17 ) to be respectively equivalent with another parallelogram ( B ) , and therefore equivalent between themselves ; and by a simple addition ( Axiom 2 ) the square on the hypothenuse is shown to ...
... third side , are proved ( also by Sect . 17 ) to be respectively equivalent with another parallelogram ( B ) , and therefore equivalent between themselves ; and by a simple addition ( Axiom 2 ) the square on the hypothenuse is shown to ...
Σελίδα xv
... third of a minute . The apparatus for distances to 4,000 yards is contained in a japanned case , 24 inches long , 4 inches broad , and 1 inch deep . The weight , including a shoulder - strap , is about four pounds , and the expense made ...
... third of a minute . The apparatus for distances to 4,000 yards is contained in a japanned case , 24 inches long , 4 inches broad , and 1 inch deep . The weight , including a shoulder - strap , is about four pounds , and the expense made ...
Σελίδα 21
... third at twelve yards , or any multiples of those numbers , giving proportions of 3 , 4 , and 5 . Stretch one of the two shorter sides along the base line and terminating at the point from which the perpendicular is to be raised , and ...
... third at twelve yards , or any multiples of those numbers , giving proportions of 3 , 4 , and 5 . Stretch one of the two shorter sides along the base line and terminating at the point from which the perpendicular is to be raised , and ...
Σελίδα 26
... THIRD PROPORTIONAL to any two given right lines ( a : b :: b : x ) . By this proportion the second side of a rectangle which will be equivalent in area with a given square may be found . Rule and example in F , Sect . 13 , and Fig . 2 ...
... THIRD PROPORTIONAL to any two given right lines ( a : b :: b : x ) . By this proportion the second side of a rectangle which will be equivalent in area with a given square may be found . Rule and example in F , Sect . 13 , and Fig . 2 ...
Σελίδα 41
... ( third side ) , and from f as centre and radius ab draw arc cutting perpen- dicular ax at g , and draw fg ( fourth side ) . Parallel to ab draw ghab ( fifth side ) . Parallel to ac and ab draw hi ( sixth side ) . ab , draw ij ( seventh ...
... ( third side ) , and from f as centre and radius ab draw arc cutting perpen- dicular ax at g , and draw fg ( fourth side ) . Parallel to ab draw ghab ( fifth side ) . Parallel to ac and ab draw hi ( sixth side ) . ab , draw ij ( seventh ...
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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...
Σελίδα 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.
Σελίδα 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.
Σελίδα 96 - Any two sides of a triangle are together greater than the third side.
Σελίδα 73 - Parallelograms on the same base, and between the same parallels, are equal to one another.
Σελίδα 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.
Σελίδα 14 - Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.