Question

En el trapecio isoseles calcular el valor de x ​

Answer 1

Recoredemos una de las propiedades de un trapecio isósceles(ver imagen), entonces

                                               $\begin{array}{c}\sf{2x+10}=\sf{4x-30}\\\\\sf{10+30}=\sf{4x-2x}\\\\\sf{40}=\sf{2x}\\\\\sf{x}=\sf{\dfrac{40}{2}}\\\\\boxed{\boxed{\boldsymbol{\red{\sf{x}=\sf{20}}}}}\end{array}$

Rpta. x = 20

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