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# GB GT2A

last edited by 10 years, 2 months ago

Home > Learn GeoGebra -> G.Bautista GeoGebra Tutorials -> GB-GT2A Constructing an Equilateral Triangle C+S

## #GeoGebra Tutorial 2A – Constructing an Equilateral Triangle with Compass & Straightedge

#2 #3

 Guillermo Bautista November 9, 2009 Adapted to strict Compass and Straightedge by LFS

Problem: How do you draw an equilateral triangle using compass and straightedge?

This construction is almost exactly the same as #2 except that here we will exactly mimic compass and straight edge construction using the compass tool.  The idea is to use the intersections of two circles and the two centers to form the triangle as shown below.

Click & drag A, B (or a=AB or the triangle itself). Notice that the triangle is always equilateral!

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Figure 1 - An equilateral triangle formed by radii of two circles

Construct online!

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