Introduction to Linear DrawingCummings, Hilliard,, 1825 - 64 σελίδες |
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Σελίδα 2
... perpendicular line . ( fig . 6. ) A perpendicular or vertical line is one perfect- ly upright , as a string will hang from a nail , or from the hand , with a weight at the end of it . ( 6 ) In making horizontal lines , the pupil should ...
... perpendicular line . ( fig . 6. ) A perpendicular or vertical line is one perfect- ly upright , as a string will hang from a nail , or from the hand , with a weight at the end of it . ( 6 ) In making horizontal lines , the pupil should ...
Σελίδα 3
... perpendicular , and cut it into two , three , four , five , six equal parts . It is difficult to cut a perpendicular into equal parts , because of an optical deception which leads us to think the upper parts shorter than they really are ...
... perpendicular , and cut it into two , three , four , five , six equal parts . It is difficult to cut a perpendicular into equal parts , because of an optical deception which leads us to think the upper parts shorter than they really are ...
Σελίδα 4
... perpendicular to the line it crosses . If the angle be less than a right angle , it is called an acute angle ; if more , it is called an obtuse angle . Acute means sharp , and obtuse means blunt . 21. Make an obtuse angle . ( fig . 8 ...
... perpendicular to the line it crosses . If the angle be less than a right angle , it is called an acute angle ; if more , it is called an obtuse angle . Acute means sharp , and obtuse means blunt . 21. Make an obtuse angle . ( fig . 8 ...
Σελίδα 5
... perpendicular drawn from the apex to the base . In the figure it is shown by the dotted line . A triangle is called Isoceles when two sides are equal . If all three of the sides are equal , it is Equilateral , ( which word means equal ...
... perpendicular drawn from the apex to the base . In the figure it is shown by the dotted line . A triangle is called Isoceles when two sides are equal . If all three of the sides are equal , it is Equilateral , ( which word means equal ...
Σελίδα 7
... perpendicular dropped from the top to the base , and is marked by the dotted line in the figure . 31. Make a square . ( fig . 17. ) This figure has its four sides equal , and all its angles right . ( 18 ) » « ( 19 ) 32. Draw two angles ...
... perpendicular dropped from the top to the base , and is marked by the dotted line in the figure . 31. Make a square . ( fig . 17. ) This figure has its four sides equal , and all its angles right . ( 18 ) » « ( 19 ) 32. Draw two angles ...
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Arithmetick axis called circumference circumscribe column comma cone cord CORINTHIAN ORDER cubick feet Cut a circle cylinder decimal Describe a circle diagonal divide DORICK ORDER dotted line draw a perpendicular Draw a right draw an arc Draw an oblique draw right lines ellipse ENTABLATURE equal sides Example fillets find the surface four sides given point graduated semicircle half diameter halves height hexagon horizontal lines hundredths inches long intercolumniation Ionick isoceles triangle length lengthened mark its centre measure Modules monitor Monitorial School Multiply the base obtuse ogee parallel sides parallelogram parallelopiped PEDESTAL plane parallel preceding figures Prob PROBLEM proportions pupil quarter quarter-round radius Raise a perpendicular rectangle regular polygon right angled triangle right line drawn RULE sandths scalene scalene triangle sided polygon sixth class smaller sides solid contents square inches square yards string subtract superficies tenths thousandths three equal torus trapezium triangular prism Tuscan upright