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\(We know \overline {DE}\parallel \overline {BC}. Given [ADE]=9 and [CDE]=6, find [ABC].\)

 Mar 29, 2023
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ADE=9, CDE=6

ADE=15

CE=(2/3)*AE

BD=(2/3)*AD

BCD=(2/3)*ADE=10

 

 

\(\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{\boxed{10}}}}}}}}\)

 Mar 29, 2023

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