Scientific and practical geometry for self-instruction1879 |
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Αποτελέσματα 1 - 5 από τα 46.
Σελίδα xi
... entire quantities ; a rect- angle forming part of the square on the hypothenuse and the square on one side being proved ( by Sect . 17 ) to be re- spectively equivalent with a given parallelogram ( A ) , and therefore equivalent between ...
... entire quantities ; a rect- angle forming part of the square on the hypothenuse and the square on one side being proved ( by Sect . 17 ) to be re- spectively equivalent with a given parallelogram ( A ) , and therefore equivalent between ...
Σελίδα 3
... entire angles on one side of the diameter ac equal two right angles . The different kinds of Angles are Acute , or less than a right angle , as kfl or any angle less than ifl ( dotted arc 1 to 1 ) . Right , when the one side is ...
... entire angles on one side of the diameter ac equal two right angles . The different kinds of Angles are Acute , or less than a right angle , as kfl or any angle less than ifl ( dotted arc 1 to 1 ) . Right , when the one side is ...
Σελίδα 20
... entire length on a strip of paper , and dividing same in half to show position of point b , which mark . With the strip thus divided , make length bd or bc , cut the and draw da . line ху at a , Then line da will be the perpendicular ...
... entire length on a strip of paper , and dividing same in half to show position of point b , which mark . With the strip thus divided , make length bd or bc , cut the and draw da . line ху at a , Then line da will be the perpendicular ...
Σελίδα 34
... entire altitude df which the side of square dh bears to side of square dg , and the area of the equilateral triangle with altitude dh ( or di ) will be the same proportion to the larger triangle which the original triangles bear , and ...
... entire altitude df which the side of square dh bears to side of square dg , and the area of the equilateral triangle with altitude dh ( or di ) will be the same proportion to the larger triangle which the original triangles bear , and ...
Σελίδα 54
... entire secant cf and the part cg without the circle ( Fig . 22 ) , and cf x cg = ca2 . 73. To find the side of a square equal in area to the balance of several squares , some added and some deducted . Construction and proof . Div . C ...
... entire secant cf and the part cg without the circle ( Fig . 22 ) , and cf x cg = ca2 . 73. To find the side of a square equal in area to the balance of several squares , some added and some deducted . Construction and proof . Div . C ...
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.