The first six books of the Elements of Euclid, and propositions i.-xxi. of book xi1885 |
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Página ix
... Parallel Lines , and Parallelograms , Definitions , Propositions 1. - XLVIII . , Questions for Examination , Exercises , · PAGE 1 14 70 72 BOOK II . Theory of Rectangles , 76 Definitions , 77 Propositions I. - XIV . , 78 Questions for ...
... Parallel Lines , and Parallelograms , Definitions , Propositions 1. - XLVIII . , Questions for Examination , Exercises , · PAGE 1 14 70 72 BOOK II . Theory of Rectangles , 76 Definitions , 77 Propositions I. - XIV . , 78 Questions for ...
Página xi
... parallel lines , 299 B. - Legendre's proof of Euclid , I. , XXXII . , 300 Hamilton's 300 99 C. - To inscribe a regular polygon of seventeen sides in a circle - Ampere's solution simplified , 302 D. - To find two mean proportionals ...
... parallel lines , 299 B. - Legendre's proof of Euclid , I. , XXXII . , 300 Hamilton's 300 99 C. - To inscribe a regular polygon of seventeen sides in a circle - Ampere's solution simplified , 302 D. - To find two mean proportionals ...
Página 3
... Parallel lines Perpendicular " " " " ။ T = In addition to these we shall employ the usual symbols + , - , & c . of Algebra , and also the sign of congruence , namely This symbol has been introduced by the illustrious Gauss . BOOK I ...
... Parallel lines Perpendicular " " " " ။ T = In addition to these we shall employ the usual symbols + , - , & c . of Algebra , and also the sign of congruence , namely This symbol has been introduced by the illustrious Gauss . BOOK I ...
Página 4
Euclides John Casey. BOOK I. THEORY OF ANGLES , TRIANGLES , PARALLEL LINES , AND PARALLELOGRAMS . DEFINITIONS . THE POINT . 1. A point is that which has position but not dimen- sions . A ... Parallel Lines, Parallelograms, Definitions,
Euclides John Casey. BOOK I. THEORY OF ANGLES , TRIANGLES , PARALLEL LINES , AND PARALLELOGRAMS . DEFINITIONS . THE POINT . 1. A point is that which has position but not dimen- sions . A ... Parallel Lines, Parallelograms, Definitions,
Página 44
... PARALLEL LINES . DEF . I. - If two right lines in the same plane be such that , when produced indefinitely , they do not meet at any finite distance , they are said to be PARALLEL . DEF . II - A parallelogram is a quadrilateral , both ...
... PARALLEL LINES . DEF . I. - If two right lines in the same plane be such that , when produced indefinitely , they do not meet at any finite distance , they are said to be PARALLEL . DEF . II - A parallelogram is a quadrilateral , both ...
Términos y frases comunes
ABCD AC is equal AD² adjacent angles altitude angle ABC angle ACB angle BAC angular points Axiom bisector bisects centre chord circles touch circumference circumscribed circle collinear concurrent lines const coplanar cyclic quadrilateral Dem.-Let diagonals diameter divided draw equal angles equal to AC equiangular equilateral triangle escribed circles Euclid Exercises exterior angle Geometry given circle given line given point greater Hence the angle hypotenuse inscribed isosceles less line AC line joining locus manner meet middle points multiple nine-points circle opposite sides parallel parallelogram parallelopiped perpendicular plane points of intersection prism PROP Proposition prove radii radius rectangle contained rectilineal figure regular polygon respectively equal right angles right line segments semicircle sides AC similar square on AC tangent theorem triangle ABC vertex vertical angle
Pasajes populares
Página 295 - Thus the proposition, that the sum of the three angles of a triangle is equal to two right angles, (Euc.
Página 182 - When of the equimultiples of four magnitudes (taken as in the fifth definition) the multiple of the first is greater than that of the second, but the multiple of the third is not greater than the multiple of the fourth ; then the first is said to have to the second a greater ratio than the third magnitude has to the fourth...
Página 9 - LET it be granted that a straight line may be drawn from any one point to any other point.
Página 102 - To divide a given straight line into two parts, so that the rectangle contained by the whole and one of the parts, shall be equal to the square on the other part.
Página 122 - The diameter is the greatest straight line in a circle; and, of all others, that which is nearer to the centre is always greater than one more remote; and the greater is nearer to the centre than the less. Let ABCD be a circle, of which...
Página 226 - If from any angle of a triangle, a straight line be drawn perpendicular to the base ; the rectangle contained by the sides of the triangle is equal to the rectangle contained by the perpendicular and the diameter of the circle described about the triangle.
Página 29 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.
Página 63 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Página 126 - The diagonals of a quadrilateral intersect at right angles. Prove that the sum of the squares on one pair of opposite sides is equal to the sum of the squares on the other pair.
Página 194 - 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.