Scientific and practical geometry for self-instruction1879 |
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Αποτελέσματα 1 - 5 από τα 42.
Σελίδα 4
... latter as to circles , ellipses , & c . , or the figure may be in part bounded by right lines and in part by curved lines . 9. Plane Figures bounded by right lines have names according to the sides or their angles , as they have as many ...
... latter as to circles , ellipses , & c . , or the figure may be in part bounded by right lines and in part by curved lines . 9. Plane Figures bounded by right lines have names according to the sides or their angles , as they have as many ...
Σελίδα 8
... latter ps , the common chord being in this case sl , diameter ) . Tangent to a circle or any other curve is a right line which touches it , but only at one point ( mn ) . Secant , a line which cuts a circumference ( Fig . D 23 , ag , af ...
... latter ps , the common chord being in this case sl , diameter ) . Tangent to a circle or any other curve is a right line which touches it , but only at one point ( mn ) . Secant , a line which cuts a circumference ( Fig . D 23 , ag , af ...
Σελίδα 12
... latter only 28 , being twice 4 + 20 , and not plus twice twenty . The sign . means because , and .. means therefore . 27. Decimal Points are best marked at the top of figures ; thus 8 for decimal 8 , though they are sometimes marked ...
... latter only 28 , being twice 4 + 20 , and not plus twice twenty . The sign . means because , and .. means therefore . 27. Decimal Points are best marked at the top of figures ; thus 8 for decimal 8 , though they are sometimes marked ...
Σελίδα 56
... latter being parallel . In geometrical operations , where two parallels are cut by two other parallels , either set may be taken as the parallels and the other as secants , in order to show equality of angles . It is by the combination ...
... latter being parallel . In geometrical operations , where two parallels are cut by two other parallels , either set may be taken as the parallels and the other as secants , in order to show equality of angles . It is by the combination ...
Σελίδα 61
... latter is equal to angle 7 with secant hi , as a corresponding angle . 8. The two internal or two external angles on the same side of a secant , cutting two parallels , are supplementary , or together equal two right angles , also the ...
... latter is equal to angle 7 with secant hi , as a corresponding angle . 8. The two internal or two external angles on the same side of a secant , cutting two parallels , are supplementary , or together equal two right angles , also the ...
Συχνά εμφανιζόμενοι όροι και φράσεις
abcd according added adopted altitude Application axis base bisected centre chord circle circumference common complete consequently construction contain continued convert corresponding cutting deduction demonstration diagonal diameter direction distance divided division double draw line drawn ellipse entire equal equal sides equidistant equivalent Euclid example external angle figure four geometrical give given greater half height hypothenuse inches included indefinite join latter length less line ac mark mean measure mode Multiply oblique operations opposed angle opposite parallel parallelogram passing perpendicular portion practical proof proportion proposition radius ratio rectangle regards remarks respectively result right angles right line rule secant Sect segment semicircle shown side ac similar simple square student summit surface taken taking tangent term third triangle
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.