Question

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Which angle measures would make a triangle with three equal side lengths?

40°, 40°, and 110°

65°, 65°, and 65°

60°, 60°, and 60°

45°, 45°, and 90°

Answer 1

60, 60, and 60.
All these angles are equilateral which would then make the side lengths the same length because of the degree being equilateral

Answer 2

60, 60 and 60 degrees

There are two criteria: the angles have to all be equal and they have to add up to 180 degrees. This answer satisfies both criteria.