Plane and Solid GeometryMacmillan, 1901 - 370 σελίδες |
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Αποτελέσματα 1 - 5 από τα 31.
Σελίδα 118
... means of a proportion are equal , either mean is said to be the mean proportional between the first and the last terms , and the last term is said to be the third proportional to the first and the second terms . = Thus , in the proportion ...
... means of a proportion are equal , either mean is said to be the mean proportional between the first and the last terms , and the last term is said to be the third proportional to the first and the second terms . = Thus , in the proportion ...
Σελίδα 119
... means is equal to the product of the extremes . Hyp . To prove Proof . a : b = c : d . adbc . a с = b d Multiplying both members by bd , ad = bc . Q.E.D. 263. COR . If three ... mean proportional between two PROPORTION . SIMILAR POLYGONS 119.
... means is equal to the product of the extremes . Hyp . To prove Proof . a : b = c : d . adbc . a с = b d Multiplying both members by bd , ad = bc . Q.E.D. 263. COR . If three ... mean proportional between two PROPORTION . SIMILAR POLYGONS 119.
Σελίδα 120
... mean proportional between 2 and 50 , between a + m and a m . Ex . 521. Find the third proportional to m and n . PROPOSITION IV . THEOREM 267. If four quantities are in proportion , they are in proportion by alternation , i.e. the first ...
... mean proportional between 2 and 50 , between a + m and a m . Ex . 521. Find the third proportional to m and n . PROPOSITION IV . THEOREM 267. If four quantities are in proportion , they are in proportion by alternation , i.e. the first ...
Σελίδα 134
... means of proving that lines are pioportional . To prove , therefore , that four lines are proportional . ( 1 ) ... proportion . ( 4 ) ( Apply alternation and inversion , if necessary . ) Ex . 573. If in the triangle ABC the altitudes 134 ...
... means of proving that lines are pioportional . To prove , therefore , that four lines are proportional . ( 1 ) ... proportion . ( 4 ) ( Apply alternation and inversion , if necessary . ) Ex . 573. If in the triangle ABC the altitudes 134 ...
Σελίδα 135
... mean proportional between the secant and its exterior segment . Ex . 577. If a diameter AB be produced to C , at C a perpendicular be erected , and through B a line be drawn to meet the circumference and the perpendicular in D and E ...
... mean proportional between the secant and its exterior segment . Ex . 577. If a diameter AB be produced to C , at C a perpendicular be erected , and through B a line be drawn to meet the circumference and the perpendicular in D and E ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude angles are equal base angles bisect bisector chord circumference circumscribed cone cylinder diagonals diagram for Prop diameter diedral angles divide draw drawn equiangular equiangular polygon equilateral triangle equivalent exterior angle face angles find a point Find the area Find the radius Find the volume frustum given circle given line given point given triangle Hence HINT homologous hypotenuse inches inscribed intersecting isosceles triangle joining the midpoints lateral area lateral edges line joining mean proportional median opposite sides parallel lines parallelogram parallelopiped perimeter perpendicular plane MN point equidistant polyedral angle polyedron PROPOSITION prove Proof quadrilateral radii ratio rectangle regular polygon respectively equal rhombus right angles right triangle SCHOLIUM segments sphere spherical polygon spherical triangle square straight angle straight line surface tangent THEOREM trapezoid triangle ABC triangle are equal triedral vertex vertical angle
Δημοφιλή αποσπάσματα
Σελίδα 146 - If two chords intersect within a circle, the product of the segments of one is equal to the product of the segments of the other.
Σελίδα 248 - A straight line perpendicular to one of two parallel planes is perpendicular to the other also.
Σελίδα 165 - The area of a rectangle is equal to the product of its base and altitude. 1\ u Hyp.
Σελίδα 303 - A cylinder is a solid bounded by a cylindrical surface and two parallel planes ; the bases of a cylinder are the parallel planes; and the lateral surface is the cylindrical surface.
Σελίδα 45 - ... the third side of the first is greater than the third side of the second.
Σελίδα 117 - In any proportion, the product of the means is equal to the product of the extremes.
Σελίδα 29 - The median to the base of an isosceles triangle is perpendicular to the base.
Σελίδα 178 - 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.
Σελίδα 150 - In any triangle, the square of the side opposite an acute angle is equal to the sum of the squares of the other two sides diminished by twice the product of one of those sides and the projection of the other upon that side.
Σελίδα 148 - If, from a jwint without a circle, a tangent and a secant be drawn, the tangent is the mean proportional between the secant and UK external segment.