A Popular Course of Pure and Mixed Mathematics ...: With Tables of Logarithms, and Numerous Questions for Exercise |
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Σελίδα 159
A line is length without breadth . 3. the extremities of a line are points . 4. A straight line is that which lies evenly between its extreme points . 5. A superficies is that which hath only length and breadth . 6.
A line is length without breadth . 3. the extremities of a line are points . 4. A straight line is that which lies evenly between its extreme points . 5. A superficies is that which hath only length and breadth . 6.
Σελίδα 160
When a straight line standing on another straight line makes the adjacent angles equal to one another , each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it . 11.
When a straight line standing on another straight line makes the adjacent angles equal to one another , each of the angles is called a right angle ; and the straight line which stands on the other is called a perpendicular to it . 11.
Σελίδα 161
Parallel straight lines , are such as are in the same plane , and which , being produced ever so far both ways , do not meet . POSTULATES . ! . Let it be granted that a straight line may be drawn from any one point to any other point .
Parallel straight lines , are such as are in the same plane , and which , being produced ever so far both ways , do not meet . POSTULATES . ! . Let it be granted that a straight line may be drawn from any one point to any other point .
Σελίδα 162
Two lines cannot inclose a space . 11. All right angles are equal to one another . 12. “ If a straight line meets two straight lines so as to make the two interior angles on the same side of it taken together less than two right angles ...
Two lines cannot inclose a space . 11. All right angles are equal to one another . 12. “ If a straight line meets two straight lines so as to make the two interior angles on the same side of it taken together less than two right angles ...
Σελίδα 163
Wherefore from the given point A a straight line AL has been drawn equal to the given straight line BC . · Which was to be done . Proposition III . Problem . From the greater of two given straight lines to cut off a part equal to the ...
Wherefore from the given point A a straight line AL has been drawn equal to the given straight line BC . · Which was to be done . Proposition III . Problem . From the greater of two given straight lines to cut off a part equal to the ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD altitude axis base become called centre circle circumference co-efficient common cone consequently contained convergency curve denominator describe diameter difference distance divided draw drawn equal equation Examples expression factors feet figure fluxion four fraction function given gives greater half Hence infinite integral join less magnitudes manner measure meet meridian method Multiply opposite original parallel parallelogram pass perpendicular plane pole Prob probability Problem projection Prop proportional Proposition pyramid quantity radius ratio rectangle Reduce remaining represented result right angles root rule sides similar sine solid sphere square straight line subtract suppose taken tang tangent Theorem things third triangle vanishing whence Wherefore whole
Δημοφιλή αποσπάσματα
Σελίδα 172 - 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...
Σελίδα 191 - If a straight line be divided into two equal parts, and also into two unequal parts, the rectangle contained by the unequal parts, together with the square on the line between the points of section, is equal to the square on half the line.
Σελίδα 190 - If a straight line be divided into any two parts, the rectangle contained by the whole and one of the parts, is equal to the rectangle contained by the two parts, together with the square of the aforesaid part.
Σελίδα 196 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Σελίδα 192 - 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 on half the line bisected, is equal to the square on the straight line which is made up of the half and the part produced.
Σελίδα 177 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Σελίδα 209 - THE straight line drawn at right angles to the diameter of a circle, from the extremity of it, falls without the circle...
Σελίδα 284 - The bases of a cylinder are the circles described by the two revolving opposite sides of the parallelogram.
Σελίδα 286 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Σελίδα 179 - 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.