A Royal Road to Geometry: Or, an Easy and Familiar Introduction to the Mathematics. ... By Thomas Malton. ...author, and sold, 1774 - 440 σελίδες |
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Σελίδα 7
... Point . Or , if any two Points , in a Plane , be joined by a Right Line , the whole line is in that Plane . A Plane may be conceived to be generated by the direct motion of a Right Line , laterally ; or whirled around on any Point in it ...
... Point . Or , if any two Points , in a Plane , be joined by a Right Line , the whole line is in that Plane . A Plane may be conceived to be generated by the direct motion of a Right Line , laterally ; or whirled around on any Point in it ...
Σελίδα 8
... Point in which two Lines , forming a Plane Angle , meet and touch each other . N. B. A fingle Angle is ufually defcribed by one Letter only , or other Character , as A or B ; but , if three or more Lines meet in a Point , then three Let ...
... Point in which two Lines , forming a Plane Angle , meet and touch each other . N. B. A fingle Angle is ufually defcribed by one Letter only , or other Character , as A or B ; but , if three or more Lines meet in a Point , then three Let ...
Σελίδα 9
... Point B , falls on this Side of a Perpendicular , BD , at that Point ; the Angle ABC , being less than the Right Angle ABD , is therefore called Acute . DEF . 13. An OBTUSE ANGLE is greater than a Right one . If the Line BE falls on the ...
... Point B , falls on this Side of a Perpendicular , BD , at that Point ; the Angle ABC , being less than the Right Angle ABD , is therefore called Acute . DEF . 13. An OBTUSE ANGLE is greater than a Right one . If the Line BE falls on the ...
Σελίδα 11
... Point in the middle of a Circle , or the middle . Point of a Circle ; which is equally diftant , every way , from the Circumference . As C. N. B. The genefis of a Circle is thus defined . If a Line , CD , be conceived to be revolved ...
... Point in the middle of a Circle , or the middle . Point of a Circle ; which is equally diftant , every way , from the Circumference . As C. N. B. The genefis of a Circle is thus defined . If a Line , CD , be conceived to be revolved ...
Σελίδα 12
... Point D , in proportion to the Lines CE and CD , by which they were generated . DEF . 21. DIAMETER , of a Circle ... Point only ; which is called the POINT OF CONTACT . As AB , touching the Circle in B. DEF . 26. A TRIANGLE is à Plane ...
... Point D , in proportion to the Lines CE and CD , by which they were generated . DEF . 21. DIAMETER , of a Circle ... Point only ; which is called the POINT OF CONTACT . As AB , touching the Circle in B. DEF . 26. A TRIANGLE is à Plane ...
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A Royal Road to Geometry: Or, an Easy and Familiar Introduction to the ... Thomas Malton Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
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Δημοφιλή αποσπάσματα
Σελίδα 118 - When you have proved that the three angles of every triangle are equal to two right angles...
Σελίδα 215 - 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.
Σελίδα 279 - EG, let fall from a point in the circumference upon the diameter, is a mean proportional between the two segments of the diameter DS, EF (p.
Σελίδα 278 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Σελίδα 180 - From this it is manifest, that if one angle of a triangle be equal to the other two, it is a right angle, because the angle adjacent to it is equal to the same two; and when the adjacent angles are equal, they are right angles.
Σελίδα 242 - To express that the ratio of A to B is equal to the ratio of C to D, we write the quantities thus : A : B : : C : D; and read, A is to B as C to D.
Σελίδα 155 - In any triangle, if a line be drawn from the vertex at right angles to the base; the difference of the squares of the sides is equal to the difference of the squares of the segments of the base.
Σελίδα 154 - In any isosceles triangle, the square of one of the equal sides is equal to the square of any straight line drawn from the vertex to the base plus the product of the segments of the base.
Σελίδα 244 - Ratios that are the same to the same ratio, are the same to one another. Let A be to B as C is to D ; and as C to D, so let E be to F.
Σελίδα 118 - Angles, taken together, is equal to Twice as many Right Angles, wanting four, as the Figure has Sides.