Elements of plane (solid) geometry (Higher geometry) and trigonometry (and mensuration), being the first (-fourth) part of a series on elementary and higher geometry, trigonometry, and mensuration |
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Page 45
... parallel . BG Let AB and CD be two right lines ly- A E ing in the same plane , and let them be so related , that the ... parallel . : Scholium . It is evident that parallel lines would never meet each other , however far they may be ...
... parallel . BG Let AB and CD be two right lines ly- A E ing in the same plane , and let them be so related , that the ... parallel . : Scholium . It is evident that parallel lines would never meet each other , however far they may be ...
Page 46
... parallel lines , which , by definition , are equidistant in all their parts . PROPOSITION XXI . THEOREM . If two right lines are perpendicular to a third line , they are parallel to each other . Let the two lines AC , BD , A be ...
... parallel lines , which , by definition , are equidistant in all their parts . PROPOSITION XXI . THEOREM . If two right lines are perpendicular to a third line , they are parallel to each other . Let the two lines AC , BD , A be ...
Page 47
... parallel . Cor . 2. If a straight line EF meet two straight lines CD , AB , making the exterior angle FGB equal to the interior and opposite angle GOD , the two lines will be parallel . For , to each add the angle OGB ; we shall then ...
... parallel . Cor . 2. If a straight line EF meet two straight lines CD , AB , making the exterior angle FGB equal to the interior and opposite angle GOD , the two lines will be parallel . For , to each add the angle OGB ; we shall then ...
Page 48
... parallels , is perpendicular to the other . Cor . 2. If a right line meet two parallel lines , the alter- nate angles will be equal . Let AB , CD , ( see diagram to the scholium of the prece- ding proposition ) , be the parallels , and ...
... parallels , is perpendicular to the other . Cor . 2. If a right line meet two parallel lines , the alter- nate angles will be equal . Let AB , CD , ( see diagram to the scholium of the prece- ding proposition ) , be the parallels , and ...
Page 49
... parallel to a third line are parallel to each other . Let CD and AB be parallel to the third line EF ; then are they parallel to each other . C Draw PQR perpendicular to EF , and cutting AB , CD . Since AB is parallel E to EF , PR will ...
... parallel to a third line are parallel to each other . Let CD and AB be parallel to the third line EF ; then are they parallel to each other . C Draw PQR perpendicular to EF , and cutting AB , CD . Since AB is parallel E to EF , PR will ...
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Elements of Plane (Solid) Geometry (Higher Geometry) and Trigonometry (and ... Nathan Scholfield No preview available - 2015 |
Common terms and phrases
ABCD abscissa altitude axis bisect chord circle circular segment circum circumference circumscribing cone conjugate construction convex surface cosec cosine cube curve cylinder described diameter distance divided draw ellipse equal to half equation equivalent feet figure formed frustum Geom geometry given hence hyperbola hypothenuse inches inscribed inscribed sphere latus rectum length logarithm magnitude measured multiplied by one-third number of sides opposite ordinates parabola parallel parallelogram perimeter perpendicular plane polyedroid polyedron polygon portion prism PROBLEM Prop proportional PROPOSITION pyramid quadrant quadrilateral quantities radii radius ratio rectangle regular polygon revoloid rhomboid right angled triangle right line root Scholium sector segment similar similar triangles sine slant height solid angle sphere spherical square straight line tangent THEOREM triangle ABC triangular triangular prism ungula vertex vertical virtual centre
Popular passages
Page 36 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Page 35 - The sum of any two sides of a triangle, is greater than the third side.
Page 60 - A tangent to a circle is perpendicular to the radius drawn to the point of contact.
Page 56 - In the same circle, or in equal circles, equal arcs are subtended by equal chords ; and, conversely, equal chords subtend equal arcs.
Page 38 - The volumes of similar solids are to each other as the cubes of their like dimensions.
Page 75 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Page 86 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line. Let...
Page 211 - To find the solidity of a hyperbolic conoid, or otherwise called a hyperboloid. RULE. To the square of the radius of the base, add the square of the diameter...
Page 48 - Hence, the interior angles plus four right angles, is equal to twice as many right angles as the polygon has sides, and consequently, equal to the sum of the interior angles plus the exterior angles.