Respuesta :
[tex]\bf \textit{area of triangle \underline{b}}\\\\
A_b=\cfrac{1}{2}bh\implies A_b=\boxed{\cfrac{bh}{2}}
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\textit{area of triangle \underline{a}}\\\\
\begin{cases}
b=\frac{b}{2}\\\\
h=\frac{h}{2}
\end{cases}\implies A_a=\cfrac{1}{2}\left( \cfrac{b}{2} \right)\left( \cfrac{h}{2} \right)\implies A_a=\boxed{\cfrac{bh}{2}}\cdot \cfrac{1}{4}
\\\\\\
A_a=A_b\cdot \cfrac{1}{4}\impliedby A_a\textit{ is one-quarter of }A_b[/tex]
