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Home » In ∆DEF and ∆PQR, it is given that ∠D = ∠Q and ∠R = ∠E, then which of the following is not true?
In ∆DEF and ∆PQR, it is given that ∠D = ∠Q and ∠R = ∠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}}
CBSE | Class 10 | Exercise MCQ | Maths | RS Aggarwal | Triangles
In ∆DEF and ∆PQR, it is given that ∠D = ∠Q and ∠R = ∠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}}

Correct Answer: (b) \frac{{DE}}{{PQ}} = \frac{{EF}}{{RP}}

Explanation:

In ∆DEF and ∆PQR,

∠???? = ∠????

∠???? = ∠????

Applying AA similarity theorem,

∆DEF ~ ∆QRP

\frac{{DE}}{{PQ}} = \frac{{EF}}{{RP}}

i

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