by vector20 (b)Line from (5, 10) to (10, 100) enlarged by scale factor 3 about (0, 0) c) Line from (100, 200) to (200, 400) enlarged by scale factor 2 about (100, 100) (d)Circle centre (200, 100) radius 50 is enlarged by scale factor 2 about (100, 100)
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