2 Answers

Pdesantis · Answer 1 · 2021-09-07T07:17:26+0000

Answer: C. 10

Step-by-step explanation:

Take half right triangle from the isosceles triangle:

We get side lengths:

12/2 = 6, 8, and x

And use Pythagorean’s theorem to find x:

6^2 + 8^2 = x^2
36 + 64 = x^2
100 = x^2
10 = x

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