Question | Answer |
Acute Angle | an angle less then 90 degrees |
Congruent Angles | angles of the same measure |
Coplanar | points and lines on the same plane |
Midpoint | a point that divides a segment into two congruent segments, it BISECTS the segement |
Perpendicular lines | lines that intersect to form RIGHT angles |
Ray | a part of a line that consists of an INITIAL point and all points on the line that lie on one side of the initial point |
Space | boundless 3-dimesional set of all points |
Angle | two rays connected at their endpoints, the points where they connect is the VERTEX |
Congruent Segments | two segements with the same length, "~=" means "is congruent to" |
Counterexample | enough to disprove a conjecture |
Obtuse Angle | an angle greater then 90 degrees |
Plane | flat surface that has no thickness, it extends without end in ALL directions |
Right Angle | an angle that is 90 degrees |
Angle Bisector | cuts an angle into two congruent angles |
Conjecture | a conclusion reached through inductive reasoning |
Inductive Reasoning | is reasoning based on observed patterns |
Opposite Rays | start at the point...and go in oppsite directions |
Point | no length, width, or thickness, but has a position |
Segment | portion of a line between two points, called ENDPOINTS |
Collinear Points | points that lie on the same line |
Coordinate | a number that is associated with a point on a number line |
Line | no length, no width, or thickness, it extends without end in two directions |
Parallel Lines | COPLANAR lines the do not intersect |
Postulate | a statement accepted to be true without proof |
Skew Lines | NONCOPLANAR lines, therefore they are NOT PARALLEL and do not INTERSECT |