Question

The triangle below is isosceles. Find the length of side x in simplest radical form with

a rational denominator.
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V10
Answer: 2=
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Answer 1

x=2*sqrt(5)

Explanation:

Since the triangle is isosceles, the other side of the triangle is sqrt(10) too. By using Pythagoras theorem, we have 10+10=x^2, x=2*sqrt(5).