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Geometry Chapter 1 Quiz Topics Notation: point, line, plane, ray, segment, parallel, perpendicular, congruent, angle Formulas: midpoint, distance between two points on the number line Properties: Definition of Congruent, Definition of Midpoint, Definition of Segment Bisector, Segment Addition Postulate, Definition of Complementary, Definition of Supplementary, Angle Addition Postulate, Definition of Perpendicular, Definition of Perpendicular Bisector Key Terms: collinear, coplanar, intersection, counter-example, opposite rays, skew, congruent, segment bisector, angle bisector, acute angle, right angle, obtuse angle, straight angle, adjacent angles, vertical angles, complementary angles, supplementary angles, perpendicular, perpendicular bisector Algebra topics: add/subtract/multiply/divide fractions, PEMDAS, solving equations with and without fractions, evaluating expressions Properties Definition of Congruence Definition of Midpoint If two angles or two segments have equal measure, then they are congruent. If M is the midpoint of AB , then AM = MB and AM MB . Definition of Segment Bisector Segment Addition Postulate (SAP) If AB is the segment bisector of XY at M, then M is the midpoint of XY . If B is between collinear points A and C, then AB + BC = AC Definition of Angle Bisector Definition of Complementary Angles If BX is the angle bisector of ABC , then ABX XBC If two angles are complementary then their measures add to 90 Definition of Supplementary Angles Definition of Perpendicular Lines If two angles are supplementary then their measures add to 180 If two lines are perpendicular, then they form congruent, right angles. Angle Addition Postulate (AAP) Definition of Perpendicular Bisector If X is in the interior of ABC , then mABX mXBC mABC If AB is the perpendicular bisector of XY at M, then M is the midpoint of XY and AB and XY make congruent, right angles.