Calendar: 1863-1864 Page 536

536 APPLIED SCIENCES Draw the isometrical projection of circular arch 20 feet span feet rise and bricks thick in wall feet thick Scale feet to one inch III -Plant romrtrj Draw scale of yards 5J inches to mile and also comparative scale of paces -25 paces 22 yards Give the representative fraction Draw scale of miles 3a showing furlongs diagonally Draw an equilateral triangle of 3-5 side and inscribe three equal circles touching its sides and one another Draw five-side figure ABCDE JB 23 CD 1-6 BC 1-75 DE 2-8 AC 37 ACD 90 BAE 90 And find triangle equal to it in area Draw an isosceles triangle whose vertical angle is 36 and area 2'5 square inches Draw triangle whose sides are 2-3 22-7 inches respec- tively and bisect it- by line parallel to one side by line perpendicular to one side Draw line AB From take AO in AB Draw OP perpendicular to AB and 8" Draw the ellipse which has AB for its major axis and Ρ one point in its circumference Also draw tangent to the ellipse at circle radius 15 rolls along straight line Draw the cycloidal curve generated by point in its circumference during one complete revolution of the circle