Elements of Geometry and Trigonometry: With Practical Applications |
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Page 7
... length , breadth , and height or thickness . 2. MAGNITUDE , in general , is that which has one or more of the three dimensions of extension . 3. A POINT is that which has position , without magni- tude . 4. A LINE is that which has length ...
... length , breadth , and height or thickness . 2. MAGNITUDE , in general , is that which has one or more of the three dimensions of extension . 3. A POINT is that which has position , without magni- tude . 4. A LINE is that which has length ...
Page 8
... length and breadth , without height or thickness . 10. A PLÁNE SURFACE , or simply a PLANE , is one in which any two points being taken , the straight line that joins them will lie wholly in the surface . 11. A CURVED SURFACE is one ...
... length and breadth , without height or thickness . 10. A PLÁNE SURFACE , or simply a PLANE , is one in which any two points being taken , the straight line that joins them will lie wholly in the surface . 11. A CURVED SURFACE is one ...
Page 14
... length . 3. That a straight line may be drawn through a given point parallel to another straight line . 4. That a perpendicular to a given straight line may be drawn from a point either within or without the line . 5. That an angle may ...
... length . 3. That a straight line may be drawn through a given point parallel to another straight line . 4. That a perpendicular to a given straight line may be drawn from a point either within or without the line . 5. That an angle may ...
Page 131
... length , and apply it six times upon A E. Join the last point of division , E , and the extremity B by the straight line EB ; and through the point C draw CD par- allel to EB ; then A D will be the sixth part of the line A B , and ...
... length , and apply it six times upon A E. Join the last point of division , E , and the extremity B by the straight line EB ; and through the point C draw CD par- allel to EB ; then A D will be the sixth part of the line A B , and ...
Page 163
... length and its breadth ( Prob . XXVI . Bk . V. ) . To square the circle , therefore , is to find the circumference when the radius is given ; and for effecting this , it is enough to know the ratio of the cir- cumference to its radius ...
... length and its breadth ( Prob . XXVI . Bk . V. ) . To square the circle , therefore , is to find the circumference when the radius is given ; and for effecting this , it is enough to know the ratio of the cir- cumference to its radius ...
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Common terms and phrases
A B C ABCD adjacent angles altitude angle equal base bisect centre chord circle circumference circumscribed cone convex surface cosec cosine Cotang cylinder diagonal diameter distance divided drawn equal Prop equilateral triangle equivalent exterior angle feet formed frustum gles greater half the sum hence homologous hypothenuse inches included angle inscribed less Let ABC line A B logarithm logarithmic sine mean proportional measured by half multiplied number of sides parallel parallelogram parallelopipedon pendicular perimeter perpendicular polyedron prism PROBLEM PROPOSITION pyramid quadrantal radii radius ratio rectangle regular polygon right angles right-angled triangle rods Scholium secant segment side A B similar sine slant height solidity solve the triangle sphere spherical polygon spherical triangle Tang tangent THEOREM triangle ABC triangle equal trigonometric functions vertex
Popular passages
Page 35 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Page 57 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Page 117 - Through a given point to draw a straight line parallel to a given straight line, Let A be the given point, and BC the given straight line : it is required to draw through the point A a straight line parallel to BC.
Page 50 - If any number of magnitudes are proportional, any antecedent is to its consequent as the sum of all the antecedents is to the sum of all the consequents. Let A : B : : C : D : : E : F; then will A : B : : A + C + E : B + D + F.
Page 77 - Two rectangles having equal altitudes are to each other as their bases.
Page 158 - If a straight line is perpendicular to each of two straight lines at their point of intersection, it is perpendicular to the plane of those lines.
Page 313 - FRACTION is a negative number, and is one more tftan the number of ciphers between the decimal point and the first significant figure.
Page 314 - The logarithm of any POWER of a number is equal to the product of the logarithm of the number by the exponent of the power. For let m be any number, and take the equation (Art.
Page 100 - The areas of two triangles which have an angle of the one equal to an angle of the other are to each other as the products of the sides including the equal angles. A D A' Hyp. In triangles ABC and A'B'C', To prove AABC A A'B'C' A'B' x A'C ' Proof. Draw the altitudes BD and B'D'.
Page 244 - RULE. — Multiply the base by the altitude, and the product will be the area.