A Course of Practical Geometry for mechanics

60 degrees altitude angle equal arc or angle base Bisect called centre chords shall form circumference curvilineal cutting BC decagon describe a circle describe an arc describe arcs cutting describe the arc diagonals diameter dodecagon Draw a line Draw chords draw lines Draw the line ellipse equilateral triangle Euclid Euclid's Elements EXAMPLE generatrix geometry given angle given circle given line given point given right line given triangle gonals heptagon inches long inscribe a regular isosceles triangle Join length Let A B line 2 inches line parallel LVIII number of degrees number of equal parallel ruler parallelogram pentagon perpendicular plane point of intersection protractor radii radius ratio rectangle regular nonagon regular polygon rhombus right angles right-angled triangle sector segment square equal straight line superficies tangent trapezium triangle being given triangle equal triangle required vertex vertical angle Vide Def vide Prob