Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 30
hew that in the diagram of Prop. ix. AF and EDintersect each other at right angles, and that ED is bisectedby AF. Ex. 2. If 0 be the point in which two lines, bisecting ABand AC, two sides of an equilateral triangle, at right angles,meet ; shew that OA, OB, OC are all equal. Ex. 3. Shew that Prop.… … Let AB be the given st. line of imlimited length; C thegiven pt. without it. It is required to draw from C a st. line ± to AB. Take any pt. D on the other side of AB. With centre C and distance CD describe a 0 cutting ABin E and F. Bisect EF in 0, and join CF, CO, CF. I. 10 Then CO shaU be ± to AB.…
Geometry
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