9. An equilateral triangle has three congruent sides.
a. A non-equilateral triangle has three congruent sides. False; an isosceles triangle has two
congruent sides.
b. A figure that has three non-congruent sides is not an equilateral triangle. True
c. A non-equilateral triangle does not have three congruent sides. True
d. A figure with three congruent sides is an equilateral triangle. True