Question

Which triangle always has sides with three different lengths? A. isosceles B. scalene C. equilateral D. right

Answer 1

That's a scalene by definition.  Isosceles has 2 sides the same and an equilateral has all 3 sides the same.

Answer 2

B. A scalene triangle always has sides, each having different lengths. Isosceles, well, think of it as eye-sosecles because you have 2 eyes, which are probably similar and an isosceles triangle has 2 sides that are the same. An equilateral has equal sides, and a right triangle has a right angle as one of the 3 angles it has. Hope this helped!