A system of practical mathematics; being no.xvi. of a new series of school-books |
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Σελίδα 87
... ( Prop . 5 ) , and have the A = the LB , they are opposite to the common side CD . Q. E. D. Cor . 1. If the equal sides AC and BC be produced to E and F , the angles EAB and ABF on the other side of the base will also be equal . For , the ...
... ( Prop . 5 ) , and have the A = the LB , they are opposite to the common side CD . Q. E. D. Cor . 1. If the equal sides AC and BC be produced to E and F , the angles EAB and ABF on the other side of the base will also be equal . For , the ...
Σελίδα 88
... ( Prop . 5 ) AL the ABD is the AABC , the D B BC , less the greater , which is impossible ; .. AC is not and in the same manner it may be shown it is not less ; hence AC is = BC . Q. E. D. Cor . Every equiangular triangle is also ...
... ( Prop . 5 ) AL the ABD is the AABC , the D B BC , less the greater , which is impossible ; .. AC is not and in the same manner it may be shown it is not less ; hence AC is = BC . Q. E. D. Cor . Every equiangular triangle is also ...
Σελίδα 89
... ( Prop . 7 ) ; again , ... AC is = DF and DF is AG , .. AC AG , and hence the LACG is the LAGC ; .. also the whole LACB is the LAGB , ( Ax . 2 ) ; but LAGB is the LDFE in a different position ; .. the LACB is = the LDFE ; and since AC ...
... ( Prop . 7 ) ; again , ... AC is = DF and DF is AG , .. AC AG , and hence the LACG is the LAGC ; .. also the whole LACB is the LAGB , ( Ax . 2 ) ; but LAGB is the LDFE in a different position ; .. the LACB is = the LDFE ; and since AC ...
Σελίδα 90
... ( Prop.7 ) ; but the LADB B is the LACB ( Prop . 10 ) ; .. D the LABD is the L ACB ( Ax . 12 ) , still more then is the whole LABC the LACB . Q. E. D. Cor . The greatest side of any triangle has the greatest angle opposite to it ...
... ( Prop.7 ) ; but the LADB B is the LACB ( Prop . 10 ) ; .. D the LABD is the L ACB ( Ax . 12 ) , still more then is the whole LABC the LACB . Q. E. D. Cor . The greatest side of any triangle has the greatest angle opposite to it ...
Σελίδα 91
... ( Prop.5 ) , and have the side AG = DF . And as BC and BG are , the LBGCis the LBCG ( Prop.7 ) ; but the LBCG is the LACG , .. also the LBGC is the LACG , ( Ax . 12 ) ; much more then is the LAGC the LACG , and hence ( Prop . 12 ) , the ...
... ( Prop.5 ) , and have the side AG = DF . And as BC and BG are , the LBGCis the LBCG ( Prop.7 ) ; but the LBCG is the LACG , .. also the LBGC is the LACG , ( Ax . 12 ) ; much more then is the LAGC the LACG , and hence ( Prop . 12 ) , the ...
Άλλες εκδόσεις - Προβολή όλων
A System of Practical Mathematics: Being No.XVI. of a New Series of School-Books Scottish School-Book Assoc Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD acres altitude annuity base bisected breadth bushels cask cent centre chord circle circumference coefficient common Cosec Cosine cubic denominator depth diagonal diameter difference distance divided divisor draw equal equation EXAMPLE EXERCISES feet figure Find the area Find the sum Find the surface fraction frustum gallons gauge given greater height hence hypotenuse inches LADC latitude least common multiple length less logarithm miles Multiply number of sides parallel Parallel Sailing parallelogram parallelopipeds perpendicular plane Plane Sailing poles polygon prism Prop proportional PROPOSITION pyramid quotient radius ratio remainder right angles RULE sailed SCHOLIUM Secant Cotang segment side AC Sine slant height solid angles specific gravity square root station straight line subtract surd surface and solidity Tang tangent THEOREM trapezium triangle ullage unknown quantities yards
Δημοφιλή αποσπάσματα
Σελίδα 122 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Σελίδα 113 - The first of four magnitudes is said to have the same ratio to the second, which the third has to the fourth, when any equimultiples whatsoever of the first and third being taken, and any equimultiples whatsoever of the second and fourth; if the multiple of the first be less than that of the second, the multiple of the third is also less than that of the fourth : or...
Σελίδα 77 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Σελίδα 78 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a Right Angle; and the straight line which stands on the other is called a Perpendicular to it.
Σελίδα 82 - ... is supposed . to be divided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and fourteen seconds, would be written 10° 18
Σελίδα 78 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Σελίδα 134 - To draw a straight line perpendicular to a plane, from a given point above it. Let A be the given point above the plane BH ; it is required to draw from the point A a straight line perpendicular to the plane BH.
Σελίδα 116 - ... of the base, have the same ratio which the other sides of the triangle have to one...
Σελίδα 69 - When any number of quantities are proportionals, as one antecedent is to its consequent, so is the sum of all the antecedents to the sum of all the consequents.
Σελίδα 123 - Weigh the denser body and the compound mass, separately, both in water and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then...