1.

The equation of the base of an equilateral triangle is x + y = 2 and one vertex is (2, -1). The length of the side of the triangle is:

A. \(\sqrt{\dfrac{3}{2}}\)
B. \(\sqrt{2}\)
C. \(\sqrt{\dfrac{2}{3}}\)
D. \(\sqrt{\dfrac{20}{3}}\)
Answer» D. \(\sqrt{\dfrac{20}{3}}\)


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