Miami
A pair of angles that share a side and a vertex
Linear Pair
the point of intersection of two or more line segments, rays, or lines
vertex
a segment, ray, line, or plane that is 90° to a segment at its midpoint
Perpendicular bisector
A flat surface (two dimensional) that extends infinitely in all directions
Plane
Lines that intersect to form four right angles
perpendicular lines
A straight, unbroken set of points that goes on forever. It has infinite length, but no thickness
Line
A part of a line, with one endpoint, that continues without end in one direction
Ray
the point about which a figure is rotated
Center of rotation
a change in the position, size, or shape of a figure. The action of mapping a preimage to the image
Transformation
lines that are always the same distance apart. They never meet.
parallel lines
A set of points that lie on the same line
Collinear
A point that divides a segment into two congruent segments
Midpoint
A rigid motion that "flips" a figure over a mirror
Reflection
A ray that divides an angle into two congruent angles
Angle bisector
A statement that has been proven
Theorem
Point, lines, or segments that lie on the same plane
Coplanar
A point, line, ray, or segment that divides a segment into two congruent segments
Segment bisector
a statement that is believed to be true
Conjecture
Two angles that add up to 90°
Complementary Angles
a statement that is accepted as truth without proof
Postulate
Consists of two endpoints and all the points between them
Line segment
formed by two rays with a common endpoint.
Angle
a transformation about a point P, also known as the center of rotation, such that each point and its image are the same distance from P. All of the angles formed by a point and its image are congruent
Rotation
Two angles that add up to 180°
Supplementary Angles
a logical argument consisting of a set of premises, hypothesis (p), and conclusion (q). If p then q.
Conditional statement