Question

If in two triangles $DEF$ and $PQR$, $\angle D=\angle Q$ and $\angle R=\angle E$, then which of the following is not true?

• A. $\frac{EF}{PR}=\frac{DF}{PQ}$
• B. $\frac{DE}{PQ}=\frac{EF}{RP}$
• C. $\frac{DE}{QR}=\frac{DF}{PQ}$
• D. $\frac{EF}{RP}=\frac{DE}{QR}$

Answer 1

The correct option is B $\frac{DE}{PQ}=\frac{EF}{RP}$
If in $△DEF$ and $△QRP$
$\angle D=\angle Q,\angle R=\angle E$
Then by AA similarity we have,
$△DEF\sim △QRP$
$\frac{DE}{QR}=\frac{EF}{RP}=\frac{DF}{PQ}$
Thus, B is not correct.