Which lines must be parallel if 15 is congruent to 7?
A. x and z
B. c and d
C. x z and c d
D. no lines are parallel

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c and d.....as 15 and 7 are the equal alternate angles.....so c and d will be parallel

Which of the following is a point on the line shown?
A. AB
B. B
C. AC
D. D

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