Elements of Geometry and Trigonometry: With Notes |
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Page xi
... less than that measure : if B is then divided by a half , a third , a ninth , a sixteenth , or any submultiple of that measure , the remainder will evidently in each case be less than that submultiple ; and as the submultiple , which of ...
... less than that measure : if B is then divided by a half , a third , a ninth , a sixteenth , or any submultiple of that measure , the remainder will evidently in each case be less than that submultiple ; and as the submultiple , which of ...
Page xii
... less , or greater , than another ratio . IV . The first and third terms of a proportion are called the antecedents ; the second and fourth , the consequents . The first and fourth are likewise called the extreme terms , or the extremes ...
... less , or greater , than another ratio . IV . The first and third terms of a proportion are called the antecedents ; the second and fourth , the consequents . The first and fourth are likewise called the extreme terms , or the extremes ...
Page xiii
... less than F ; and suppose n A = m ( B - B ' ) , B ' being of course less than the measure , and therefore still less than F. By the same Definition , we shall have n C = m ( D — D ′ ) , D ′ being a positive quantity . Hence we have n A ...
... less than F ; and suppose n A = m ( B - B ' ) , B ' being of course less than the measure , and therefore still less than F. By the same Definition , we shall have n C = m ( D — D ′ ) , D ′ being a positive quantity . Hence we have n A ...
Page 1
... less , by which they are separated from each other in regard to their position , is called an an- gle ; the point of intersection A is the ver- A4 ter of the angle ; the lines AB , AC , are its sides . C -B The angle is sometimes ...
... less , by which they are separated from each other in regard to their position , is called an an- gle ; the point of intersection A is the ver- A4 ter of the angle ; the lines AB , AC , are its sides . C -B The angle is sometimes ...
Page 2
... less than a right angle , is an acute angle ; eve- ry angle DEF , greater than a right angle , is an obtuse angle . E 12. Two lines are said to be parallel , when , being situated in the same plane , they cannot meet , how far soever ...
... less than a right angle , is an acute angle ; eve- ry angle DEF , greater than a right angle , is an obtuse angle . E 12. Two lines are said to be parallel , when , being situated in the same plane , they cannot meet , how far soever ...
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Common terms and phrases
ABCD adjacent angles altitude angle ACB angle BAD base bisect centre chord circ circle circular sector circumference circumscribed common cone construction continued fraction convex surface cosines cylinder diameter dicular draw drawn equal angles equation equivalent figure formed formulas four right angles frustum given angle given line gles greater homologous sides hypotenuse inclination inscribed intersection isosceles less Let ABC let fall likewise measure multiplied number of sides oblique lines opposite parallel parallelepipedon parallelogram pendicular perimeter perpen perpendicular plane MN polyedron prism proposition quadrilateral radii radius ratio rectangle regular polygon respectively equal right angles right-angled triangle SABC Scholium sector segment similar sine solid angle solid described sphere spherical polygons spherical triangle square straight line suppose tang tangent THEOREM third side three angles trian triangle ABC triangular prism triangular pyramids vertex vertices
Popular passages
Page 257 - 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.
Page iii - District, has deposited in this office the title of a book, the right whereof he claims as proprietor, in the words following, to wit : " THE CHILD'S BOTANY," In conformity to the act of the Congress of the United States, entitled, " An act for the encouragement of learning by securing the copies of maps, charts, and books to the authors and proprietors of such copies, during the times therein mentioned...
Page 187 - For, if the arc AD be drawn from the vertex A to the middle point D of the base, the two triangles ABD, ACD, will have all the sides of the one respectively equal to the corresponding sides of the other...
Page 3 - A right-angled triangle is one which has a right angle. The side opposite the right angle is called the hypothenuse.
Page 27 - CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Page 11 - If two triangles have two sides of the one respectively equal to two sides of the other, and the included angles unequal, the triangle which has the greater included angle has the greater third side.
Page 73 - If two polygons are composed of the same number of triangles, similar each to each, and similarly placed, the polygons are similar. In the two polygons ABCDE and A'B'C'D'E', let the triangles AEB, EEC, CED be similar, respectively, to the triangles A'E'B', B'E'C', C'E'D'; and similarly placed.
Page 157 - Any two rectangular parallelopipedons are to each other as the products of their bases by their altitudes ; that is to say, as the products of their three dimensions.
Page 107 - ... of the regular inscribed and circumscribed polygons having double the number of sides. Let AB be a side of the given inscribed polygon ; EF, parallel to AB, a side of the circumscribed polygon ; C the centre of the circle. If the chord AM and the tangents AP, BQ, be drawn, AM...
Page 59 - Two triangles of the same altitude are to each other as their bases, and two triangles of the same base are to each other as their altitudes. And triangles generally, are to each other, as the products of their bases and altitudes.