In an equilateral triangle, are sides and all angles are equal.
All of the angles inside the triangle are equal to 60° each.
What we have to do is construct arcs in the circle with a length of 60° from 0, to ensure that the triangle we construct will have angles of 60°.
That is represented in the option
"construct exactly 6 congruent arcs on circle 0 with length of 0a "
Because if we construct 6 congruent arcs each one will measure:
[tex]\frac{360}{6}=60[/tex]
60°, which is what we need for the equilateral triangle
Since each angle has a measure of 60°, we can take the triangle with length OA and draw an equilateral triangle
Answer: construct exactly 6 congruent arcs on circle 0 with length of 0a
