In the straightedge and compass construction of the equilateral triangle
below, which of the following reasons can you use to prove that ab and ac
are congruent?
a. ac and bc are both radii of oa.
o o
b. ac and ab are both radii of oa.
ab and bc are both radii of oa.
o
d. ac and ab are both chords of
a.
< previous