Text-book of Euclid's elements for the use of schools : books I - VI and XI (1900)
Hall, H. S. (Henry Sinclair), 1848-1934, Stevens, F. H. (Frederick Haller), 1853-1933 · MacMillan : London · leaf 65
e sides. 10. Explain why parallel straight lines must be in the sameplane. 11. Prove by means of Prop. 7 that on a given base and on thesame side of it only one equilateral triangle can be drawn. 12. In an isosceles triangle, if the equal sides are produced,shew that the angles on the other side of… … Let A, B, C be the three given straight lines, of whichany two are together greater than the third. It is required to describe a triangle of which the sides shall beequal to A, B, C. Construction. Take a straight line DE terminated at the point D, but unlimited towards E.Make DF equal to A, FG…
Geometry · Mathematics
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