Tuesday, June 25, 2013

Trisecting a Right Angle

Let BAC be the give right angle.

  • With centre A and any convenient radius , draw an arc cutting AB at Q and AC at P
  • With the same radius and centres P and Q , draw arcs cutting the arc of step a) at R and S respectively. 
  • Draw lines joining A with P and Q. AP and AQ trisect the right angle BAC.
                 Thus ∠BAR = ∠RAS = ∠SAC = 1/3 ∠BAC
This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com

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