Scientific and practical geometry for self-instruction1879 |
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Σελίδα xi
... 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 be obviously eqivalent with the squares on the other ...
... 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 be obviously eqivalent with the squares on the other ...
Σελίδα 3
... respectively right angles , and that together they include all the angles in the circle , being four right angles , and that the entire angles on one side of the diameter ac equal two right angles . The different kinds of Angles are ...
... respectively right angles , and that together they include all the angles in the circle , being four right angles , and that the entire angles on one side of the diameter ac equal two right angles . The different kinds of Angles are ...
Σελίδα 29
... respectively equal to base therefore equal ( Axiom 1 ) . The like , with given altitude . ( Fig . 25 , ah . ) The readiest mode is to draw an equilateral triangle with a greater altitude ( akc ) , and then from the required altitude at ...
... respectively equal to base therefore equal ( Axiom 1 ) . The like , with given altitude . ( Fig . 25 , ah . ) The readiest mode is to draw an equilateral triangle with a greater altitude ( akc ) , and then from the required altitude at ...
Σελίδα 57
... respectively make with the parallels they cut eight different angles , as numbered in the figures . As explained in Div . A ( Definitions , Explanations , and Axioms ) , Sect . 20 , and as shown in Fig . 1 C , the entire angles from the ...
... respectively make with the parallels they cut eight different angles , as numbered in the figures . As explained in Div . A ( Definitions , Explanations , and Axioms ) , Sect . 20 , and as shown in Fig . 1 C , the entire angles from the ...
Σελίδα 58
... respectively on same side of the secant , will be corresponding angles . As between the angles formed by two secants cutting parallels , and being themselves parallel ( see Fig . 3 , fg and hi ) , the numbers just given , whether formed ...
... respectively on same side of the secant , will be corresponding angles . As between the angles formed by two secants cutting parallels , and being themselves parallel ( see Fig . 3 , fg and hi ) , the numbers just given , whether formed ...
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.