An Introduction to Technical Drawing for Use in Secondary and Technical Schools: A Complete Course in Three Parts, Part 1Blackie, 1952 - Mechanical drawing |
Contents
DRAWING EQUIPMENT | 4 |
PARALLEL AND PERPENDICULAR LINES | 10 |
THE PARABOLA | 40 |
2 other sections not shown
Common terms and phrases
A B and CD ABCDEF altitude arcs to cut base angle Bisect centimetre centre F circle to pass circle to touch circumference conic sections construct a triangle crank OA describe a circle describe arcs directrix distance Divide draw a circle draw a square eccentricity ellipse equal in area equal in length Example fig fair curve fixed point fixed straight line focus given base given circle GIVEN DATA Continued given point given straight line given triangle helix hexagons horizontal hyperbola hypotenuse inch internal diameter Let A B major axis mark MEDIAN minor axes number of equal P₁ parabola parallel perpendicular pitch Plane Geometry Plot the locus points of intersection polygon produce protractor radii rectangle regular polygon required circle required triangle right angles scale of chords semicircle shown in fig side straight line equal subtended table of chords tangent technical drawing touch a given touch the given vertical angle