2. By applying SAS congruence rule, you want to establish that  \bigtriangleup PQR\cong \bigtriangleup FED. It is given that PQ= FE and RP= DF. What additional information is needed to establish the congruence?

Answers (1)

 To prove congruency by SAS rule, we need to equate two corresponding sides and one corresponding angle,

so in   proving \bigtriangleup PQR\cong \bigtriangleup FED we need,

PQ= FE

RP= DF

And

\angle P = \angle F.

Hence the extra information we need is \angle P = \angle F.

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