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Write a two column proof

Write a two column proof-example-1
User Jennilee
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To prove <QPR = <QRP we have to prove ΔPTR ≅ ΔRSP

Let T be the mid point of PQ and S be the mid point of QR

line joining T and S is TS parallel to PR

Triangle PTR and triangle RSP have same base, one side equal and between same parallel are congruent.

Therefore ΔPTR ≅ ΔRSP by CPCTC <QPR = <QRP

So we can cnclude that PQR is an isosceles triangle.

User Franz Gastring
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