Geometry Common Core with 100% correct answer

Midpoint of a line segment - a point of that line segment that divides the segment into two congruent segments Bisector of a line segment - any line, or subset of a line, that intersects the segment at its midpoint Linear pair - If two angles form a linear pair, then they are supplementary Perpendicular lines - two lines that intersect to for a right angle. Their slope is the negated reciprocal of each other. Perpendicular bisector - any line of subset of a line that is perpendicular to the line segment's midpoint Vertical angles - two angles in which the sides of one angle are opposite rays to the sides of the second angle. The vertical angles are congruent. Angle bisector - a ray whose endpoint is the vertex of the angle, and that divides that angle into two congruent angles. Reflexive - the reflexive property of equality is when a quantity is equal to itself. Transitive - the transitive property of equality is that a quantity equals to the same quantity are equal to each other. Substitution - a quantity may be substituted for its equal in any statement of equality Partition 1 - Segment addition - a segment is congruent to the sum of all its parts Partition 2 - Angle addition - An angle is congruent to the sum of all its parts Addition - if equal quantities are added to equal quantities, the sum are equal