Math 202 Study Guide Questions With Complete Solutions

Point correct answer: think of a dot in space, but ideally having no size or space Line correct answer: think of infinitely long string to both direction, but ideally having no thickness Ray correct answer: think of a string starts with a point, and is infinitely long to one direction, but ideally having no thickness as well. Segment correct answer: think of a string starts with a point and ends with a point and has finite length, but ideally having not thickness as well. We call the points at both ends endpoints. Plane correct answer: think of an infinitely large flat piece of paper, but ideally having not thickness Space correct answer: Just look around for the 3-D space that we are living in. Angle correct answer: Rays meeting and space between rays. Two angles are congruent if they both represent the same amount of rotation. Perpendicular correct answer: When all 4 of the angles are 90 degrees Parallel correct answer: Two lines in a plane that never meet Parallel Postulate correct answer: If two parallel lines are cut by traversal, then the corresponding angles are equal. A postulate means it is assumed to be true. Actually, the parallel postulate cannot be proved, and it is assumption that we have in the Euclidean geometry that we learn in math. Reflection correct answer: The normal line at a point on a surface is the line that passes through that point and is perpendicular to the surface at that point. Reflection of Light correct answer: Th