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20 10 Taizhou senior high school entrance examination mathematics 22 questions
( 1){4, 3} {4,3}

(2) O {0,0} A {3,1} B {4,3} C {1,2} D {4,3} is at point B.

OC// and =AB, so the quadrilateral OABC is a parallelogram.

(3) Starting from the origin, first translate to P according to the translation amount {2,3}, then to Q according to the translation amount {3,2}, and finally to O according to the translation amount {-5,5}.