The Harpur Euclid: An Edition of Euclid's ElementsRivingtons, 1890 - 515 σελίδες |
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Αποτελέσματα 1 - 5 από τα 82.
Σελίδα 4
... problem such as to divide a given angle into three equal angles as ' impossible , ' they mean ' impossible under the restrictions they have placed upon themselves as to the elementary constructions they take for granted . ' They only ...
... problem such as to divide a given angle into three equal angles as ' impossible , ' they mean ' impossible under the restrictions they have placed upon themselves as to the elementary constructions they take for granted . ' They only ...
Σελίδα 6
... PROBLEM . To describe an equilateral triangle on a given finite straight line . Let AB be the given straight line ; it is required to describe an equilateral triangle on AB . A B From the centre A , at the distance AB , describe the ...
... PROBLEM . To describe an equilateral triangle on a given finite straight line . Let AB be the given straight line ; it is required to describe an equilateral triangle on AB . A B From the centre A , at the distance AB , describe the ...
Σελίδα 7
... sides is called the vertex . ' ( Syllabus . ) 4. The quadrilateral ( four - sided ) figure ACBD has all its sides equal . Such a quadrilateral is called a rhombus . PROPOSITION 2. PROBLEM . From a given point to draw Book I. Prop . I. 7.
... sides is called the vertex . ' ( Syllabus . ) 4. The quadrilateral ( four - sided ) figure ACBD has all its sides equal . Such a quadrilateral is called a rhombus . PROPOSITION 2. PROBLEM . From a given point to draw Book I. Prop . I. 7.
Σελίδα 8
... PROBLEM . From a given point to draw a straight line equal to a given straight line . Let A be the given point , and BC the given straight line ; it is required to draw from the point A a straight line equal to BC . H K CGH cutting DB ...
... PROBLEM . From a given point to draw a straight line equal to a given straight line . Let A be the given point , and BC the given straight line ; it is required to draw from the point A a straight line equal to BC . H K CGH cutting DB ...
Σελίδα 9
... problem might be solved . The student should try to go through the other seven by himself . 2. The demonstration of the possibility of solving this problem has been rendered necessary by the restriction which Euclid has placed upon the ...
... problem might be solved . The student should try to go through the other seven by himself . 2. The demonstration of the possibility of solving this problem has been rendered necessary by the restriction which Euclid has placed upon the ...
Άλλες εκδόσεις - Προβολή όλων
The Harpur Euclid: An Edition of Euclid's Elements, Revised in Accordance ... Edward Mann Langley,Euclid,W. Seys Phillips Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
bisect bisector Brocard point chord circum-circle of triangle circumference coincide common concyclic congruent cyclic quadrilateral demonstration described diagonals diameter diamr divided draw equal angles equiangr equiangular equidistant equilateral triangle equimultiples Euclid exterior angle Geometry given circle given point given ratio given st given straight line given triangle greater Hence inscribed intersect isosceles isosceles triangle Join Let ABC locus magnitude meet mid-point opposite sides parallel parallelogram pass pentagon perpendicular plane produced Prop PROPOSITION PROPOSITION 13 radical axis radius rect rectangle contained reqd rhombus right angles segment Show sides BC similar Similarly Simson's line square straight line drawn student subtended symmedian symmedian point tangent THEOREM touch triangle ABC vertex vertices
Δημοφιλή αποσπάσματα
Σελίδα 21 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Σελίδα 369 - 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 390 - ... figures are to one another in the duplicate ratio of their homologous sides.
Σελίδα 97 - Let it be granted that a straight line may be drawn from any one point to any other point.
Σελίδα 370 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Σελίδα 96 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Σελίδα 40 - Any two sides of a triangle are together greater than the third side.
Σελίδα 143 - Three times the sum of the squares on the sides of a triangle is equal to four times the sum of the squares of the lines joining the middle point of each side with the opposite angles.
Σελίδα 407 - Pythagoras' theorem states that the square of the length of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the lengths of the other two sides.
Σελίδα 156 - If a straight line be bisected and produced to any point, the rectangle contained by the whole line thus produced and the part of it produced, together •with the square...