Elements of Plane Geometry According to EuclidW. and R. Chambers, 1837 - 240 sider |
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Resultat 1-5 av 100
Side 5
... theorem , a problem , or a lemma . 2. A theorem is a truth which is established by a demon- stration . 3. A problem either proposes something to be effected , as the construction of a figure ; or it is a question that re- quires a ...
... theorem , a problem , or a lemma . 2. A theorem is a truth which is established by a demon- stration . 3. A problem either proposes something to be effected , as the construction of a figure ; or it is a question that re- quires a ...
Side 9
... THEOREM . The angles at the base of an isosceles triangle are equal to one another ; and if the equal sides be produced , the angles upon the other side of the base shall also be equal . Let ABC be an isosceles triangle , of which the ...
... THEOREM . The angles at the base of an isosceles triangle are equal to one another ; and if the equal sides be produced , the angles upon the other side of the base shall also be equal . Let ABC be an isosceles triangle , of which the ...
Side 11
... THEOREM . Upon the same base , and on the same side of it , there cannot be two triangles that have their sides which are ter- minated in one extremity of the base equal to one another , and likewise those which are terminated in the ...
... THEOREM . Upon the same base , and on the same side of it , there cannot be two triangles that have their sides which are ter- minated in one extremity of the base equal to one another , and likewise those which are terminated in the ...
Side 12
... THEOREM . side If two triangles have two sides of the one equal to two sides of the other , each to each , and have likewise their bases equal , the angle which is contained by the two sides of the one shall be equal to the angle ...
... THEOREM . side If two triangles have two sides of the one equal to two sides of the other , each to each , and have likewise their bases equal , the angle which is contained by the two sides of the one shall be equal to the angle ...
Side 16
... THEOREM . If , at a point in a straight line , two other straight lines , upon the opposite sides of it , make the adjacent angles to- gether equal to two right angles , these two straight lines shall be in one and the same straight ...
... THEOREM . If , at a point in a straight line , two other straight lines , upon the opposite sides of it , make the adjacent angles to- gether equal to two right angles , these two straight lines shall be in one and the same straight ...
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Elements of Plane Geometry According to Euclid Robert Simson,Formerly Chairman Department of Immunology John Playfair,John Playfair Ingen forhåndsvisning tilgjengelig - 2016 |
Vanlige uttrykk og setninger
ABCD AC is equal angle ABC angle ACB angle BAC angle BCD angle EDF apothem base BC bisected centre chord circle ABC circumference described diameter double draw equal angles equal to AC equiangular equilateral polygon equimultiples exterior angle fore geometry given circle given line given point given rectilineal given straight line gnomon greater hypotenuse inscribed interminate less Let ABC magnitudes multiple opposite angle parallel parallelogram perimeter perpendicular polygon porism produced proportional PROPOSITION radius rectangle AB BC rectangle contained rectilineal figure regular polygon remaining angle right angles right-angled triangle Schol segment semicircle semiperimeter similar sine square of AC tangent THEOREM touches the circle triangle ABC triangle DEF twice the rectangle vulgar fraction wherefore
Populære avsnitt
Side 1 - Things which are equal to the same thing are equal to one another. 2. If equals be added to equals the wholes are equal. 3. If equals be taken from equals the remainders are equal. 4. If equals be added to unequals the wholes are unequal. 5. If equals be taken from unequals the remainders are unequal. 6. Things which are double of the same thing are equal to one another.
Side 73 - The angle in a semicircle is a right angle; the angle in a segment greater than a semicircle is less than a right angle; and the angle in a segment less than a semicircle is greater than a right angle.
Side 9 - To bisect a given finite straight line, that is, to divide it into two equal parts. Let AB be the given straight line : it is required to divide it intotwo equal parts.
Side 4 - If two triangles have two sides of the one equal to two sides of the...
Side 139 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides. Let AC, CF be equiangular parallelograms, having the angle BCD equal to the angle ECG ; the ratio of the parallelogram AC to the parallelogram CF, is the same with the ratio which is compounded of the ratios of their sides. Let BC, CG, be placed in a straight line ; therefore DC and CE are also in a straight line (2.
Side 23 - 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 129 - 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 80 - A circle is said to be described about a rectilineal figure, when the circumference of the circle passes through all the angular points of the figure about which it is described. 7. A straight line is said to be placed in a circle, when the extremities of it are in the circumference of the circle.
Side 27 - Parallelograms upon equal bases, and between the same parallels, are equal to one another.
Side 44 - If a straight line be divided into any two parts, the squares of the whole line and of one of the parts are equal to twice the rectangle contained by the whole and that part, together with the square of the other part. Let the straight line AB be divided into any two parts at the point C : the squares of AB, BC shall be equal to twice the rectangle AB, BC, together with the square of AC.