i 1 6 i 1 7 ic 3 2 i 2i 3 6 i 4i 2 6 i 9 4 9 136 103 a m A 35\u00ba m B 35\u00ba m ACB

# I 1 6 i 1 7 ic 3 2 i 2i 3 6 i 4i 2 6 i 9 4 9 136 103

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i 1 = 6 i 1 = 7 i c: (3 2 i )(2 i + 3) = 6 i 4 i 2 6 i + 9 = 4 + 9 = 13 6-103. a: m A = 35º, m B = 35º, m ACB = 110º, m D = 35º, m E = 35º, m DCE = 110º b: Answers vary. Once all the angles have been solved for, state that two pairs of corresponding angles have equal measure, such as m A = m D and m B = m E , to reach the conclusion that Δ ABC ~ Δ DEC by AA ~ or AC = BC and DC = EC , so AC DC = BC EC and m ACB = m DCE, therefore Δ ABC ~ Δ DEC by SAS ~. c: They are both correct. Since both triangles are isosceles, we cannot tell if one is the reflection or the rotation of the other (after dilation). 6-104. A 6-105. a: No, there may be red marbles that she has not selected in her draws. b: No, it is less likely that there are red marbles, but no number of trials will ever assure that there are no red ones. c: This is not possible, no number of draws will assure this. 6-106. C

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