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Unformatted text preview: AQB, CRD and PQRS are straight lines. If ° = ∠ 85 QRD , prove CD AB // . 3. in the figure, ACD is a straight line and ° = ∠ 90 CDE . Prove ° = + + 90 c b a 4. In the figure, QR PT // and PSR is a straight line. Prove a b SQR= ∠ 5. In the figure, PQ MN // . Prove n p m + = + ° 180 6. In the figure, EF AB // and DE BC // . Prove DEF ABC ∠ = ∠ ....
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 Winter '11
 fugee
 Geometry, Euclidean geometry, Projective geometry, Po Shan Memorial College

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