An Elementary Course of Plane GeometryThomas Murray, 1870 - 16 σελίδες |
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Σελίδα ix
... Compasses . - Surveyor's Chain . - Properties of Lines . CHAP . II . - Angles · Definitions of various Angles ; how named . - Perpendiculars and Obliques . - Angles formed by intersecting Lines . - Set Squares.- Geometrical Locus ...
... Compasses . - Surveyor's Chain . - Properties of Lines . CHAP . II . - Angles · Definitions of various Angles ; how named . - Perpendiculars and Obliques . - Angles formed by intersecting Lines . - Set Squares.- Geometrical Locus ...
Σελίδα x
... Compass . — Pantograph . - Measurement of inaccessible Objects . CHAP . VIII . - Circles and Secants Relations between Circles and Straight Lines . - Division of Angles.- Angles at Centre and Circumference . - Properties and Relations ...
... Compass . — Pantograph . - Measurement of inaccessible Objects . CHAP . VIII . - Circles and Secants Relations between Circles and Straight Lines . - Division of Angles.- Angles at Centre and Circumference . - Properties and Relations ...
Σελίδα 6
... compasses ( fig . 12 ) at the two extremities , and carrying the com- passes to the scale . If one point be placed at the beginning of the scale , the numbers opposite the other will give the length of the line . A line longer than the ...
... compasses ( fig . 12 ) at the two extremities , and carrying the com- passes to the scale . If one point be placed at the beginning of the scale , the numbers opposite the other will give the length of the line . A line longer than the ...
Σελίδα 23
... compasses , so as to form an angle of any size . The interior or exterior edge of the ་ Fig . 37 . stock is applied to one of the sides of the given angle , and the blade is opened or shut until its edge lies upon the other . The ...
... compasses , so as to form an angle of any size . The interior or exterior edge of the ་ Fig . 37 . stock is applied to one of the sides of the given angle , and the blade is opened or shut until its edge lies upon the other . The ...
Σελίδα 25
... compasses upon a perfectly even board , and the compasses be then turned round this point , the other being properly pressed upon the board , a line is drawn which we call a circumference ( fig . 38 ) . The distance between the two ...
... compasses upon a perfectly even board , and the compasses be then turned round this point , the other being properly pressed upon the board , a line is drawn which we call a circumference ( fig . 38 ) . The distance between the two ...
Άλλες εκδόσεις - Προβολή όλων
An Elementary Course of Plane Geometry and Mensuration Richard Wormell Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Συχνά εμφανιζόμενοι όροι και φράσεις
A B C adjacent angles alternate angles angle equal angular points apex base bisect centre centre of symmetry chord circumscribed coincide construction contained cumference decagon describe a circle diagonals diameter dicular distance divide dodecagon draw a straight equal arcs equal circles equilateral triangle extremities figure Find the area Geometry given angle given circle given point given polygon given radius given straight line greater half height Hence hexagon hypothenuse inscribed inscribed angle instrument interior angles isosceles triangle length line drawn line joining line parallel measure middle point number of sides opposite angles opposite sides parallel straight lines parallelogram pentagon perimeter perpen perpendicular plane Plane Geometry point of contact point of intersection proportional protractor Prove quadrilateral radii ratio rectangle regular polygon respectively equal rhombus right-angled triangle ruler secant segments similar square symmetrical axis tangent vertical
Δημοφιλή αποσπάσματα
Σελίδα 33 - Any two sides of a triangle are together greater than the third side.
Σελίδα 266 - IF from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.
Σελίδα vi - In my own time," says Seneca, "there have been inventions of this sort, transparent windows, tubes for diffusing warmth equally through all parts of a building, short-hand, which has been carried to such a perfection that a writer can keep pace with the most rapid speaker. But the inventing of such things is drudgery for the lowest slaves; philosophy lies deeper. It is not her office to teach men how to use their hands.
Σελίδα 59 - If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles; and the three interior angles of every triangle are together equal to two right angles.
Σελίδα 146 - If from a point without a circle a tangent and a secant be drawn, the tangent is a mean proportional between the whole secant and its external segment.
Σελίδα 153 - Describe a circle which shall pass through two given points, and have its centre in a given line.
Σελίδα 68 - If two parallel lines are cut by a third straight line, the sum of the two interior angles on the same side of the transversal is equal to two right angles, (p.
Σελίδα 86 - If a straight line be divided into any two parts, the square on the whole line is equal to the squares on the two parts, together with twice the rectangle contained by the two parts.
Σελίδα 264 - To prove that the exterior angle of a triangle is equal to the sum of the two interior opposite angles (see fig.
Σελίδα 11 - I., 5), (3) that, if two straight lines cut one another, the vertically opposite angles are equal (Eucl.