each side must be less than the sum of the other two sides, so we need
x < 6+12
6 < x+12
12 < x+6
looks like (a) to me. If the sides are 6,6,12, then the triangle is just a flat line.
in triangle ABC, AB=6, BC=12 AND AC=X. Which of the following cannot be a value of x?
a. 6
b.7
c.8
d.9
e.10
1 answer