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In triangle PQR, points S and T lie on PQ and PR with ST parallel to QR. Given PS = 3 cm, SQ = 2 cm and PT = 4.5 cm.
Using the AA similarity that ST || QR provides, find PR.
Give PR in cm.

Class 10Criteria for SimilarityGeometry — Similarity
  • A8.5
  • B15
  • C6.5
  • D7.5

Step-by-Step Solution

ST || makes triangle ~ triangle (AA). , so cm.
Answer: D) 7.5

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