Asap. answer only if you know how to solve these types of problems. i don't want any little kids putting random answers.

2x = 60
x = 30

30-14 = 16 units

It would have to be 30 units because the sum of the angles in a triangle is 180. Because it is an equilateral triangle, all angles are equivalent. 2(30)=60 thus all other angles must be 60. 60x3 angles=180 degrees.