Answer:
Option 2 is correct .i.e., Joo-Eun can only draw one unique triangle with these side lengths.
Step-by-step explanation:
Measures of sides of triangles are 6 mm , 8 mm and 11 mm
We use a result which states that if sum of two sides of a triangle is greater than 3rd side then triangle with those measures exist.
here,
6 + 8 = 14 > 11
6 + 11 = 17 > 8
8 + 11 = 19 > 6
Therefore, triangle With given measures exist.
Now we use another result which says that a triangle with given measurement can only be drawn as one unique triangle and the angles would be unique for the particular triangle.
Therefore, Option 2 is correct .i.e., Joo-Eun can only draw one unique triangle with these side lengths.