Question

Which lengths represent the lengths of the sides of a scalene triangle: 3, 4, 5; 4, 4, 5; 12, 7, 7; 15, 15, 15?

Answer 1

`3,4,5" "` A scalene triangle by definition has three unequal sides.

Explanation:

`4,4,5 and 12,7, 7` are isosceles triangles because they have two equal sides .

`15,15,15 " "`is an equilateral triangle -it has three equal sides.