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Princeton Review
A and B are the endpoints of a line segment. Segment AB is crossed through point C by another line segment with endpoints D and E. If \(\angle{ACD} \gt 90^{\circ},\) and the sum of \(\angle{ACE}\) and \(\angle{BCD}\) is x, then which of the following must be true?
A. x < 90
B. x > 90
C. 90 < x < 180
D. x < 180
E. x > 180
OA D
A and B are the endpoints of a line segment. Segment AB is crossed through point C by another line segment with endpoints D and E. If \(\angle{ACD} \gt 90^{\circ},\) and the sum of \(\angle{ACE}\) and \(\angle{BCD}\) is x, then which of the following must be true?
A. x < 90
B. x > 90
C. 90 < x < 180
D. x < 180
E. x > 180
OA D
