 | Ernest William Hobson, Charles Minshall Jessop - Plane trigonometry - 1892 - 328 pages
...feet from the ground ? 104. On the sides of an equilateral triangle 3 squares are described. Compare the area of the triangle formed by joining the centres of these squares with the area of the equilateral triangle. 105. If a circle be inscribed in a square, and between... | |
 | 1899 - 138 pages
...the radii of the circles circumscribing FAB, FBC, FCA, then 2 (R2) = 2 (GA2), a minimum. Find also the area of the triangle formed by joining the centres of these circles. Solution by the PROPOSER. Since the angles at F are 120° each, therefore the radii of the circles... | |
 | Education - 1897 - 542 pages
...tho radii of the circles rcumscribing FAB, FBC, FCA, then 2(R ; ) = 2(«A 5 ), a minimum, ind also the area of the triangle formed by joining the centres of these Teles. NOTICE TO CORRESPONDENTS. It is requested that all Mathematical communications should be ent... | |
 | Edinburgh Mathematical Society - Electronic journals - 1894 - 234 pages
...BC ; therefore arc BQ = arc CQ', and AP, AF are isogonal with respect to L A. (6) If from a point О within or without a triangle ABC, perpendiculars OD,...centres of these circles are the mid points of OA, OB, ОС. (7) If from a point 0 within triangle ABC perpendiculars OD, OE, OF be drawn to BC, С A, AB,... | |
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Compare the area of the triangle formed by joining the centres of these squares with the area of the equilateral triangle. 
