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Why do we often erase protruding parts of a drawing, or a extend shorter side, when drawing/ sketching a triangle?


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IF PQR is a triangle such that and S is a point on segment PQ, T a point on PR. Further, ST=TR = 3 cm; PS=QR= 4 cm.
Determine, with reasons, the length of
  • PT
  • SQ
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JCA Presentation: Using GeoGebra in Secondary School Mathematics teaching