Mathematics B Regents High School Examination - The University Of The State Of New York, 2007 Page 8

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19 Which transformation represents a dilation?
computations.
(1) (8,4) → (11,7)
(3) (8,4) → (–4,–8)
(2) (8,4) → (–8,4)
(4) (8,4) → (4,2)
20 In ΔABC, m∠A = 30, a = 14, and b = 20. Which type of angle is ∠B?
(1) It must be an acute angle.
(2) It must be a right angle.
(3) It must be an obtuse angle.
(4) It may be either an acute angle or an obtuse angle.
[8]
Math. B – Jan. ’07

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