GRE Exam Numerical Ability Geometry

Points A, B, C, and D, in that order, lie on a line. If AD = 9 cm, AC = 4 cm, and BD = 6 cm, what is AB (in cm) ? (A) 2 (B) 3 (C) 4 (D) 1

Read Solution (Total 1)

Answer is Option (B).

If A,B,C,D are the points in order lie on a line then,
AD = AB + BC + CD
AD = AB + BD
9 = AB + 6
AB = 3 cm (Option B)
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