Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2006-10-20 11:23:59

Registered: 2005-09-17
Posts: 166

Straightedge and compass constructions

Suppose you are solving a ruler and a straigtedge construction. Do you have to assume the compass is collaspible eventhough Euler proved it is possible to copy a line segment with a collaspible. Do I have to copy a line segment using Euler's method or could I just lift the compass and move it to another place and draw the segment?


#2 2006-10-20 15:51:56

Registered: 2006-03-12
Posts: 1,332

Re: Straightedge and compass constructions

If you want to duplicate the length of a line segment, you just need a compass.

If you also want the same direction, construct a parallel line first.



Board footer

Powered by FluxBB