The Elements of Euclid; viz. the first six books, together with the eleventh and twelfth. Also the book of Euclid's Data. By R. Simson. To which is added, A treatise on the construction of the trigonometrical canon [by J. Christison] and A concise account of logarithms [by A. Robertson]. |
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Side 63
If in a circle two straight lines cut one another which do not both pass through the
centre , they do not bisect each other . Let ABCD be a circle , and AC , BD two
straight lines in it which cut one another in the point E , and do not both pass ...
If in a circle two straight lines cut one another which do not both pass through the
centre , they do not bisect each other . Let ABCD be a circle , and AC , BD two
straight lines in it which cut one another in the point E , and do not both pass ...
Side 69
If two circles touch each other internally , the straight line which joins their centres
being produced shall pass through ... G the centre of the circle ADE : The straight
line which joins the centres F , G , being produced , passes through the point A ...
If two circles touch each other internally , the straight line which joins their centres
being produced shall pass through ... G the centre of the circle ADE : The straight
line which joins the centres F , G , being produced , passes through the point A ...
Side 89
If AC , BD pass each of them through the centre , so that E is the centre ; it is
evident , that AE , EC , BE , ED , being all equal , the rectangle AE , EC is likewise
B equal to the rectangle BE , ED . But let one of them BD pass through the centre
...
If AC , BD pass each of them through the centre , so that E is the centre ; it is
evident , that AE , EC , BE , ED , being all equal , the rectangle AE , EC is likewise
B equal to the rectangle BE , ED . But let one of them BD pass through the centre
...
Side 91
Either DCA passes through the centre , or it does not ; first , let it pass through the
centre E , and join EB ; therefore the angle EBD is a right a angle : And because
the straight line AC is bisected in E , and produced to the point D , the rectangle ...
Either DCA passes through the centre , or it does not ; first , let it pass through the
centre E , and join EB ; therefore the angle EBD is a right a angle : And because
the straight line AC is bisected in E , and produced to the point D , the rectangle ...
Side 191
If it be possible , let AB , part of the straight line ABC , be in the plane , and the
part BC above it : And since the straight line AB is in the plane , it can be
produced in that plane : Let it be produced to D : And let any plane pass through
the BD ...
If it be possible , let AB , part of the straight line ABC , be in the plane , and the
part BC above it : And since the straight line AB is in the plane , it can be
produced in that plane : Let it be produced to D : And let any plane pass through
the BD ...
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The Elements of Euclid; viz. the first six books, together with the eleventh ... Euclides Uten tilgangsbegrensning - 1834 |
Vanlige uttrykk og setninger
added altitude angle ABC angle BAC base Book centre circle circle ABCD circumference common cone contained cylinder definition demonstrated described diameter difference divided double draw drawn equal equal angles equiangular equimultiples excess figure fore four fourth given angle given in position given in species given magnitude given ratio given straight line greater Greek half join less likewise logarithm magnitude manner meet multiple opposite parallel parallelogram pass perpendicular plane prism produced PROP proportionals proposition pyramid radius reason rectangle rectangle contained remaining right angles segment shown sides similar sine solid solid angle sphere square square of AC Take taken THEOR third triangle ABC wherefore whole
Populære avsnitt
Side 43 - IF a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.
Side 20 - Any two sides of a triangle are together greater than the third side.
Side 30 - Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Side 20 - If, from the ends of the side of a triangle, there be drawn two straight lines to a point within the triangle, these shall be less than, the other two sides of the triangle, but shall contain a greater angle. Let...
Side 306 - 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.
Side 8 - DL is equal to DG, and DA, DB, parts of them, are equal ; therefore the remainder AL is equal to the remainder (3. Ax.) BG : But it has been shewn that BC is equal to BG ; wherefore AL and BC are each of them equal to BG ; and things that are equal to the same are equal to one another ; therefore the straight line AL is equal to BC.
Side 153 - 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.
Side 52 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.
Side 3 - 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.
Side 165 - SIMILAR triangles are to one another in the duplicate ratio of their homologous sides.