Skip to main content
We’ve updated our Terms of Service. A new AI Addendum clarifies how Stack Overflow utilizes AI interactions.
replaced tag with top level tag
Link
Ricardo Andrade
  • 6.3k
  • 5
  • 43
  • 69
added 467 characters in body
Source Link
ε-δ
  • 1.8k
  • 3
  • 19
  • 34

Is it possible to construct the midpoint of a segment in the hyperbolic plane using the set square only?

With the set square one can

  • draw the line through the given two points and
  • drop the perpendicular from the given point to the given line.

The following construction produce the point $X'$ which is centrally symmetric to the point $X$ with respect to point $O$.

  1. Draw line $(OX)$ and let $m$ be the line perpendicular to $(OX)$ through $O$.
  2. Draw yet two perpendicular lines $l$ and $l'$ through $O$.
  3. Find the foot point $Y$ of $X$ on $l$.
  4. Draw the line through $Y$ perpendicular to $m$ and let $Z$ be its intersection with $l'$.
  5. Finally, $X'$ is the footpoint of $Z$ on $l$.

Is it possible to construct the midpoint of a segment in the hyperbolic plane using the set square only?

With the set square one can

  • draw the line through the given two points and
  • drop the perpendicular from the given point to the given line.

Is it possible to construct the midpoint of a segment in the hyperbolic plane using the set square only?

With the set square one can

  • draw the line through the given two points and
  • drop the perpendicular from the given point to the given line.

The following construction produce the point $X'$ which is centrally symmetric to the point $X$ with respect to point $O$.

  1. Draw line $(OX)$ and let $m$ be the line perpendicular to $(OX)$ through $O$.
  2. Draw yet two perpendicular lines $l$ and $l'$ through $O$.
  3. Find the foot point $Y$ of $X$ on $l$.
  4. Draw the line through $Y$ perpendicular to $m$ and let $Z$ be its intersection with $l'$.
  5. Finally, $X'$ is the footpoint of $Z$ on $l$.
Source Link
ε-δ
  • 1.8k
  • 3
  • 19
  • 34

Mid point with set square?

Is it possible to construct the midpoint of a segment in the hyperbolic plane using the set square only?

With the set square one can

  • draw the line through the given two points and
  • drop the perpendicular from the given point to the given line.