Practical plane and solid geometry for advanced students, including graphic statics, adapted to the requirements of the South Kensington syllabus (1899)
Harrison, Joseph, Baxandall, George Albert · London Macmillan · leaf 84
so ina straight line, but 1^ times as fast as the boy, what directionmust the former take to catch the latter? (1880) *13. Describe a circle of 2^ radius touching the two given circles.The given circles are to be within the required circle. (1877) *14. Describe three circles touching the two given… … CHAPTER IV CONIC SECTIONS 75. Definitions.—Let one of two intersecting straightlines of indefinite length revolve about the other as a fixedaxis, the inclination to each other and the point of intersec-tion of the lines remaining fixed, then the two equal andopposite acute angles generate two equal…