Little explorations with HP calculators (no Prime)

03292017, 06:15 PM
Post: #71




RE: Little explorations with the HP calculators
(03292017 11:49 AM)pier4r Wrote:(03292017 11:31 AM)Han Wrote: Have you considered the sum of the angles in a triangle and a quadrilateral, and properties of vertical angles? So \(\angle BED\) , \(\angle BDE \), \( \angle CDE \) and \( \angle AED \) should be the only angles whose measure you cannot determine directly from the properties mentioned. What if you set up an appropriate system of equations involving these angles? Graph 3D  QPI  SolveSys 

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