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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Resultat 1-5 av 5
Side 85
In a circle , the angle in a semicircle is a right angle ; bụt the angle in a segment
greater than a semicircle is less than a ... 1 . angles , and that BAC is a right angle
, ABC must be less than a right angle ; and therefore the angle in a segment ...
In a circle , the angle in a semicircle is a right angle ; bụt the angle in a segment
greater than a semicircle is less than a ... 1 . angles , and that BAC is a right angle
, ABC must be less than a right angle ; and therefore the angle in a segment ...
Side 183
A equal to one at D , and the sides about these angles proportionals , viz . BA to
AC , as CD to DE , the triangle ABC is equiangularb to DCE : Therefore the angle
ABC is 6 . 6 . equal to the angle DCE : And the angle BAČ was proved to be ...
A equal to one at D , and the sides about these angles proportionals , viz . BA to
AC , as CD to DE , the triangle ABC is equiangularb to DCE : Therefore the angle
ABC is 6 . 6 . equal to the angle DCE : And the angle BAČ was proved to be ...
Side 205
If a solid angle be contained by three plane angles , See N . any two of them are
greater than the third . Let the solid angle at A be contained by the three plane
angles , BAC , CAD , DAB . Any two of them are greater than the third . If the
angles ...
If a solid angle be contained by three plane angles , See N . any two of them are
greater than the third . Let the solid angle at A be contained by the three plane
angles , BAC , CAD , DAB . Any two of them are greater than the third . If the
angles ...
Side 425
milar to OPQ : Because , as has been shown , the ratio of AD to BC is the same
with the ratio of ( HF to FL , that is , by the construction , with the ratio of ) OR to
PQ ; and the angle BAC is equal to the angle POQ . Therefore the triangle ABC is
...
milar to OPQ : Because , as has been shown , the ratio of AD to BC is the same
with the ratio of ( HF to FL , that is , by the construction , with the ratio of ) OR to
PQ ; and the angle BAC is equal to the angle POQ . Therefore the triangle ABC is
...
Side 426
Let the triangle ABC have the given angle BAC , and let the straight line AD ,
drawn to the base BC , making the given angle ADB , divide CB into the
segments BD , DC , which have a given ratio to one another ; the triangle ABC is
given in ...
Let the triangle ABC have the given angle BAC , and let the straight line AD ,
drawn to the base BC , making the given angle ADB , divide CB into the
segments BD , DC , which have a given ratio to one another ; the triangle ABC is
given in ...
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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.