Elements of geometry and mensurationLongman, Brown, Green, and Longmans, 1854 - 192 σελίδες |
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Αποτελέσματα 1 - 5 από τα 100.
Σελίδα 2
... a ' line ' above given is the only one which can insure general accuracy of measurement . 4. Another term in common use in Geometry is ' point ' , by which is meant generally no more than a place to start from , or to stop at , in ...
... a ' line ' above given is the only one which can insure general accuracy of measurement . 4. Another term in common use in Geometry is ' point ' , by which is meant generally no more than a place to start from , or to stop at , in ...
Σελίδα 3
Thomas Lund. It follows , that each extremity of a line is a point . 5. Lines are of two kinds , straight and crooked . A straight line , or , as it is often called , a right line , is the direct , that is , the shortest , line ...
Thomas Lund. It follows , that each extremity of a line is a point . 5. Lines are of two kinds , straight and crooked . A straight line , or , as it is often called , a right line , is the direct , that is , the shortest , line ...
Σελίδα 10
... A straight line may be drawn on a given plane surface from any one point to any other point . II . A terminated straight line may be ' produced ' , that is , extended , to any length in a straight line . III . A circle may be described ...
... A straight line may be drawn on a given plane surface from any one point to any other point . II . A terminated straight line may be ' produced ' , that is , extended , to any length in a straight line . III . A circle may be described ...
Σελίδα 16
... a circle on the same side of AB , and intersecting the former in the point C ; join the points A and C by the straight line AC ( POST . 1. ) , and B and C by the straight line BC ; then ABC shall be the equilateral triangle required ...
... a circle on the same side of AB , and intersecting the former in the point C ; join the points A and C by the straight line AC ( POST . 1. ) , and B and C by the straight line BC ; then ABC shall be the equilateral triangle required ...
Σελίδα 17
... point A upon the point D , and the line AB upon DE ; then the point B will fall B upon E , because AB = DE . Again , since AB falls upon DE , AC will also fall upon DF , because < BAC = ¿ EDF , ( 8. ) Since , then , the point A is upon the ...
... point A upon the point D , and the line AB upon DE ; then the point B will fall B upon E , because AB = DE . Again , since AB falls upon DE , AC will also fall upon DF , because < BAC = ¿ EDF , ( 8. ) Since , then , the point A is upon the ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
ABCDEF acres base bisect breadth centre chain chord circular circum circumference circumscribing circle compasses construction contained continued fraction curved decimal Diagonal Scale diagram diameter distance divided draw drawn edge equilateral triangle find the area find the length fraction frustum given angle given circle given line given point given straight line given triangle half height Hence hexagon inscribed instrument intersecting join Let ABCD lineal unit magnitude meet multiplied number of equal number of sides number of units opposite angle parallelogram perimeter perpendicular plane surface plot points of division PROB produced PROP proportional Protractor radii radius ratio rectangle rectangular regular polygon represent right angles shew shewn similar similar triangles square feet square foot square inches straight edge subtends suppose trapezium triangle ABC vernier vertex whole yards
Δημοφιλή αποσπάσματα
Σελίδα 32 - If a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.
Σελίδα 19 - To draw a straight line at right angles to a given straight line, from a given point in the same.
Σελίδα 27 - 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.
Σελίδα 32 - If the square described upon one of the sides of a triangle, be equal to the squares described upon the other two sides of it; the angle contained by these two sides is a right angle.
Σελίδα 43 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 17 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Σελίδα 22 - Theorem. The greater side of every triangle is opposite to the greater angle. Let ABC be a triangle of which the side AC is greater than the side AB ; the angle ABC is also greater than the angle BCA. Because AC is greater than AB, make...
Σελίδα 192 - The circumference of every circle is supposed to be divided into 360 equal parts called degrees, and each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds, and these into thirds, fourths, &c.
Σελίδα 126 - Upon a given straight line to describe a segment of a circle, which shall contain an angle equal to a given rectilineal angle.
Σελίδα 20 - To draw a straight line perpendicular to a given straight line of an unlimited length, from a given point without it.