Respuesta :

Answer:

Step-by-step explanation:

since the base angles of a triangle are equal the given triangle an isosceles triangles.

therefore side x is also 9 because the two sides of an isosceles triangle is equal.

Now for side y

using pythagoras theorem

a^2 + b^2 = c^2

9^2 + 9^2 =y^2

81 + 81 = y^2

162 = y^2

[tex]\sqrt{162}[/tex] = y

[tex]9\sqrt{2}[/tex] =y