A course of practical geometry for mechanics1846 |
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altitude angle to contain arc or angle Arithmetical mean base called centre chords shall form circumference decagon describe a circle describe an arc describe arcs cutting describe the arc diagonals diameter dodecagon Draw a line Draw chords Draw the line ellipse equilateral triangle erect a perpendicular Euclid Euclid's Elements EXAMPLE extremities generatrix given angle given circle given figure given line given number given point given triangle inches long inscribe a regular isosceles triangle Join length Let A B line 2 inches line A D number of degrees number of equal parallel ruler parallel to A B parallelogram pentagon plane point of intersection PROBLEM protractor radii radius ratio rectangle regular heptagon regular pentagon regular polygon rhombus right angles right-angled triangle scale scalene triangle sector segment square equal straight line Superficies tangent triangle ACB triangle required vertex vertical angle Vide Def Vide Prob