Use the compass tool to copy the given segment. To do this on Geogebra, do the following:[br][br][list][*]Use the "point" tool to place a point somewhere on the applet[/*][*]Use the compass tool to construct a circle with radius the length of the original circle centered at the point you just drew[/*][*]Use the "segment" tool to construct a radius of the circle[/*][/list][br]This new segment will be the same length as the original segment, and thus congruent to the segment.