You have to decide whether the data given in the statements are sufficient for answering the question. All numbers used are real numbers. . A figure accompanying a data sufficiency problem will conform to the information given in the question. Lines shown as straight can be assumed to be straight and lines that appear jagged can also be assumed to be straight. You may assume that positions of points, angles, regions, etc., exist in the order shown and that angle measures are greater than zero.
All figures lie in a plane unless otherwise indicated. .
In data sufficiency problems that ask you for the value of a quantity the data given in the statements are sufficient only when it is possible to determine exactly one numerical value for the quantity. . In a certain parallelogram, the degree measure of one angle exceeds that of another angle by 30. Next 80 linear feet of fencing material is used to construct a rect- angular enclosure. The length of one particular side of the enclosure is 10 feet. . Figure not drawn to scale.