An Elementary Course of Plane GeometryThomas Murray, 1870 - 16 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 50.
Σελίδα 6
... 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 scale may be measured by marking off Fig . 12. with the compasses the ...
... 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 scale may be measured by marking off Fig . 12. with the compasses the ...
Σελίδα 9
... pass- ing from the position of one to that of the other . The point through which they pass is termed the apex or vertex of the angle , and the straight lines are its sides . An angle is designated by a letter placed at its apex , as ...
... pass- ing from the position of one to that of the other . The point through which they pass is termed the apex or vertex of the angle , and the straight lines are its sides . An angle is designated by a letter placed at its apex , as ...
Σελίδα 13
... pass through the point M. These operations are rendered easier by applying a ruler to the line A B , and sliding the square along it . This plan is particularly useful when several per- pendiculars to the same line are required ...
... pass through the point M. These operations are rendered easier by applying a ruler to the line A B , and sliding the square along it . This plan is particularly useful when several per- pendiculars to the same line are required ...
Σελίδα 14
... pass from its position E to E. If the edge of the square coincide in this new position with the line , it is true . Fig . 25 represents the test of an untrue square , each of the angles being less than a right - angle . Fig . 25 . M 28 ...
... pass from its position E to E. If the edge of the square coincide in this new position with the line , it is true . Fig . 25 represents the test of an untrue square , each of the angles being less than a right - angle . Fig . 25 . M 28 ...
Σελίδα 15
... passes through the line drawn . The wet ink will print on the other side of the crease another line similar to the first . The crease in the paper forms a straight line , which is called the symmetrical axis , or line of symmetry of the ...
... passes through the line drawn . The wet ink will print on the other side of the crease another line similar to the first . The crease in the paper forms a straight line , which is called the symmetrical axis , or line of symmetry of the ...
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.