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 58
... tangent is a line which touches A a circumference , so that if it is produced , it will not cut it . The line AB is a tan- gent . 11. A secant is a line that cuts a circle lying partly within and partly without . The line CD is a secant ...
... tangent is a line which touches A a circumference , so that if it is produced , it will not cut it . The line AB is a tan- gent . 11. A secant is a line that cuts a circle lying partly within and partly without . The line CD is a secant ...
Page 64
... tangent of the circumference ; and conversely , a tangent to the circle is perpendicular to the radius drawn to the point of contact . Let ABD be perpendicular to the radius CB , it shall touch the circle in the point A B. B ED For to ...
... tangent of the circumference ; and conversely , a tangent to the circle is perpendicular to the radius drawn to the point of contact . Let ABD be perpendicular to the radius CB , it shall touch the circle in the point A B. B ED For to ...
Page 65
... tangent DE ( Prop . IX . ) , and also to its parallel MP . But , since CH is perpendi- cular to the chord MP , the point H must be the middle of the arc MHP ( Prop . VI . ) ; therefore the arcs MH , HP , included between the parallels ...
... tangent DE ( Prop . IX . ) , and also to its parallel MP . But , since CH is perpendi- cular to the chord MP , the point H must be the middle of the arc MHP ( Prop . VI . ) ; therefore the arcs MH , HP , included between the parallels ...
Page 67
... tangent to each other . For they have only the point A common , and if through the point A , AE be drawn perpendicular to AD , the straight line AE will be a common tangent to all the circles . PROPOSITION XVI . THEOREM . In the same ...
... tangent to each other . For they have only the point A common , and if through the point A , AE be drawn perpendicular to AD , the straight line AE will be a common tangent to all the circles . PROPOSITION XVI . THEOREM . In the same ...
Page 73
Nathan Scholfield. PROPOSITION XXI . THEOREM . The angle formed by a tangent and a chord is measured by half the are included between its sides . Let BE be the tangent , and AC the chord . From A , the point of contact , draw the ...
Nathan Scholfield. PROPOSITION XXI . THEOREM . The angle formed by a tangent and a chord is measured by half the are included between its sides . Let BE be the tangent , and AC the chord . From A , the point of contact , draw the ...
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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.