A Course of Mathematics ...: Designed for the Use of the Officers and Cadets of the Royal Military College, Volume 1C. Glendinning, 1807 - Mathematics |
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Page 186
... bisect AB , and that PD PC , and the points A , D , are joined . B M AV Because the sides PB , PC , of the triangle PBC , are respectively equal to the sides PA , PD of the triangle PAD , and the included angles at P also equal ( 39 ) ...
... bisect AB , and that PD PC , and the points A , D , are joined . B M AV Because the sides PB , PC , of the triangle PBC , are respectively equal to the sides PA , PD of the triangle PAD , and the included angles at P also equal ( 39 ) ...
Page 187
... bisect . AC , it may be proved that the angle CAR or its equal BAG is greater than ACB . 40. If two straight lines in the same plane intersect another straight line , and make the alternate angles equal , the two lines are parallel ...
... bisect . AC , it may be proved that the angle CAR or its equal BAG is greater than ACB . 40. If two straight lines in the same plane intersect another straight line , and make the alternate angles equal , the two lines are parallel ...
Page 190
... bisects the vertical angle ( ABC ) of an isosceles triangle , bisects the base ( AC ) , and is also perpendicular to it . Corol . 2. And if two angles of a triangle be equal , the sides subtending those angles will also be equal . Corol ...
... bisects the vertical angle ( ABC ) of an isosceles triangle , bisects the base ( AC ) , and is also perpendicular to it . Corol . 2. And if two angles of a triangle be equal , the sides subtending those angles will also be equal . Corol ...
Page 194
... bisects any chord , it will be at right angles to it , and the arc of that chord will also be bisected by the same radius . C ID B R Let C be the centre of the circle , and AB a chord ; then if the radius CR bisects the chord in the ...
... bisects any chord , it will be at right angles to it , and the arc of that chord will also be bisected by the same radius . C ID B R Let C be the centre of the circle , and AB a chord ; then if the radius CR bisects the chord in the ...
Page 195
... bisects the angle ACB , and is perpendicular to AB . And because the arcs AR , BR are the measures of the equal angles ... bisect BA , GD ( 46 , cor . 1 ) ; hence the triangles RCB , RCA , SCD , SCG are iden- tical , therefore CR = CS ...
... bisects the angle ACB , and is perpendicular to AB . And because the arcs AR , BR are the measures of the equal angles ... bisect BA , GD ( 46 , cor . 1 ) ; hence the triangles RCB , RCA , SCD , SCG are iden- tical , therefore CR = CS ...
Common terms and phrases
angle ACB arith arithmetical arithmetical mean base battalions bisect breadth centre chord ciphers circle circumference consequently corol cosine cube root cubic decimal defilé diameter diff difference distance ditch divided dividend division divisor example farthings feet figure frustum give given line half the arc half the perimeter height Hence horizontal improper fraction inches integer intersection isosceles least common multiple length logarithm mean proportional measure miles mixt number multiplied nearly number of terms opposite angles paces parallel parallelogram perpendicular plane polygon prism pyramid quadrilateral quotient radius ratio rectangle Reduce remainder rhombus right angles right line right-angled triangle scale of equal segment shillings sides similar sine square root subtracted Suppose tangent Theodolite toises VULGAR FRACTIONS whole number yards
Popular passages
Page 100 - Multiply the whole augmented divisor by this last quotient figure, and subtract the product from the said dividend, bringing down to the next period of the given number, for a new dividend. Repeat the same process over again — viz. find another new divisor, by doubling all the figures now...
Page 95 - If the errors are unlike, divide the sum of the products by the sum of the errors, and the quotient will be the answer.
Page 220 - A solid angle is that which is made by the meeting of more than two plane angles, which are not in the same plane, in one point. X. ' The tenth definition is omitted for reasons given in the notes.
Page 180 - Magnitudes which coincide with one another, that is, which exactly fill the same space, are equal to one another.
Page 114 - 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.
Page 189 - A sector, is any part of a circle bounded by an arc, and two radii, drawn to its extremities. A quadrant, or quarter of a circle, is a sector having a quarter part of the circumference for its arc, and the two radii perpendicular to each other.
Page 334 - To find the area of a triangle. RULE.* Multiply the base by the perpendicular height, and half the product will be the area.
Page 165 - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Page 211 - If there be any number of proportionals, as one antecedent is to its consequent, so is the sum of all the antecedents to the sum of all the consequents.
Page 207 - Similar rectilineal figures are those which have their several angles equal, each to each, and the sides about the equal angles proportionals. II. " Reciprocal figures, viz. triangles and parallelograms, " are such as have their sides about two of their " angles proportionals in such a manner, that a side