ECD would also be 55 since ACB and ECD are vertical angles, therefore they're congruent

**Answer:**

First box: 6

Second box: 10

Third box: 14

**Step-by-step explanation:**

The rule is to add the same number to each box. I tried adding different numbers, and I stopped at 4. 2 + 4 is 6, 6+4 is 10, 10+4 is 14, and 14+4 is 18. Therefore, you fill in the numbers accordingly.

Hope this helps!

~gloriouspurpose~

**Answer:**

greater I think

**Step-by-step explanation:**

Use a^2 + b^2 = c^2 to get your answer

6^2 + b^2 =7^2

36 + b^2 = 49

b^2 = 13

b= 3.6

3.6 meters apart