Possible Clues:

• Like a 3-4-5 right triangle
• Not isosceles or equilateral
• Neither isosceles nor equilateral
• Kind of triangle or muscle
• Having three unequal sides, of a triangle
• Climb north face of escarpment with uneven sides
• Like a triangle with sides of different lengths
• Having sides of different lengths, as a triangle
• Having three unequal sides, as a triangle