An introduction to geometry, consisting of Euclid's Elements, book i, accompanied by numerous explanations, questions, and exercises, by J. Walmsley. [With] Answers, Volumen11884 |
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Página 3
... applied to surfaces ; an ' even surface meaning a perfectly flat one ; that is , one in which there are no ' ups and downs . ' So an 6 even line ' is one in which there are no ' ins and outs ' to the right or left in going along it . To ...
... applied to surfaces ; an ' even surface meaning a perfectly flat one ; that is , one in which there are no ' ups and downs . ' So an 6 even line ' is one in which there are no ' ins and outs ' to the right or left in going along it . To ...
Página 17
... applied ? 3. Lengthen out AB a little beyond B to some point , and call this other point F. What postulate have you now applied ? 4. With centre A and radius AB describe a circle ( or circumference ) , and place the letters C , D along ...
... applied ? 3. Lengthen out AB a little beyond B to some point , and call this other point F. What postulate have you now applied ? 4. With centre A and radius AB describe a circle ( or circumference ) , and place the letters C , D along ...
Página 18
... applying Axioms 4 and 5 , we usually happen to know which is the greater of the pair of unequals ; and for practical purposes these axioms might advantageously be stated as follows : - : - 4. If equals be added to unequals , the wholes ...
... applying Axioms 4 and 5 , we usually happen to know which is the greater of the pair of unequals ; and for practical purposes these axioms might advantageously be stated as follows : - : - 4. If equals be added to unequals , the wholes ...
Página 22
... applying Axiom 8 to rectilineal figures . For , to begin with a straight line , when we have fitted the two ends of one straight line upon the two ends of another , we could not be sure that the lines are entirely fitted one upon the ...
... applying Axiom 8 to rectilineal figures . For , to begin with a straight line , when we have fitted the two ends of one straight line upon the two ends of another , we could not be sure that the lines are entirely fitted one upon the ...
Página 30
... applying one straight line to another in order to see whether they are equal or not , distinguish three separate steps . 9. Referring to the figure of Proposition IV . , suppose we have taken up the triangle ABC from its place and have ...
... applying one straight line to another in order to see whether they are equal or not , distinguish three separate steps . 9. Referring to the figure of Proposition IV . , suppose we have taken up the triangle ABC from its place and have ...
Otras ediciones - Ver todas
An Introduction to Geometry, Consisting of Euclid's Elements, Book I ... Euclides Sin vista previa disponible - 2013 |
An Introduction to Geometry, Consisting of Euclid's Elements, Book I ... Euclides Sin vista previa disponible - 2023 |
An Introduction to Geometry, Consisting of Euclid's Elements, Book I ... Euclides Sin vista previa disponible - 2018 |
Términos y frases comunes
AB is equal AC is equal adjacent angles alternate angle angle ABC angle ACB angle AGH angle BAC angle BCD angle equal angles CBA axiom base BC bisects the angle centre circle circumference Constr construction definition describe diagonal Diagram diameter enunciation equal and parallel equal angles equal sides equal to BC EQUIANGULAR POLYGONS equilateral triangle Euclid Euclid's Elements exterior four right angles Geometry given angle given point given straight line greater hypotenuse hypothesis inference isosceles triangle join less Let ABC magnitude meet middle point opposite angles opposite interior angle opposite sides pair of equal parallel to BC parallelogram perpendicular Postulate produced proof Prop proposition prove quadrilateral rectilineal figure respectively equal rhombus right angles right-angled triangle sides equal square supplementary angles theorems thesis trapezium triangle ABC triangles are equal unequal vertex Wherefore
Pasajes populares
Página 132 - 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 86 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Página 139 - If two triangles have two angles of the one equal to two angles of the other, each to each, and also one side of the one equal to the corresponding side of the other, the triangles are congruent.
Página 133 - The complements of the parallelograms, which are about the diameter of any parallelogram, are equal to one another.
Página 134 - Prove that parallelograms on the same base and between the same parallels are equal in area.
Página 134 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line ; it is required to draw a straight line through the point A, parallel to the straight hue BC.
Página 50 - if two straight lines" &c. QED COR. 1. From this it is manifest, that if two straight lines cut one another, the angles which they make at the point where they cut, are together equal to four right angles.
Página 20 - PROB. 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.
Página 96 - Parallelograms upon the same base and between the same parallels, are equal to one another.
Página 49 - If at a point in a straight line, two other straight lines, upon the opposite sides of it, make the adjacent angles together equal to two right angles ; then these two straight lines shall be in one and the same straight line.