Copying a Triangle

1. Create a line below the original triangle (you can zoom out with the touch pad if you need more space)[br]2. Find the "compass" feature -- it will be underneath the "circle" tab. Using the "compass" feature, copy the length of BC and create a circle on point D with it.[br]3. Using the "point" button, label the intersection of your line and the circle. This segment DF will be congruent to segment BC.[br]4. Using the "compass" feature once again, copy the length of BA, and paste that length onto point D.[br]5. Do the process above again, but this time, copy the length of CA and paste that length onto point F. Find the intersection of your last two circles, and label a "point" on it.[br]6. Use the "polygon" button to create triangle DFG.
1. What is the advantage that a compass has over a ruler?
2. What were we really doing with the compass feature?
3. What Postulate or Theorem did we use to do this?
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Information: Copying a Triangle