Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

An equilateral triangle on three lines

Author:Gerry Stahl
Construction of an equilateral triangle with a vertex on each of three parallel lines.

New Resources

  • Midpoint Theorem (V2): Integer Solutions
  • Segment Addition Postulate (Mild Questions)
  • Right Triangle Inscribed in a Semicircle
  • Angle Addition Postulate (V2) - Integer Solutions
  • End Behavior of Polynomial Functions

Discover Resources

  • Centre to Midpoint of Chord (Proof)
  • FUN!!
  • act_av_rt_chng_TempMonth
  • TEST Triangles
  • McCall - Circle Constructions

Discover Topics

  • Vectors 3D (Three-Dimensional)
  • Function Graph
  • Linear Equations
  • Piecewise Functions
  • Rational Numbers
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®