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### 31 Cards in this Set

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 A set of points all which lie on the same straight line. Collinear Set of Points A set of three or more points that do not all lie on the same straight line. Noncollinear Set of Points the absolute value of the difference of the corrdinates of the two points, Distance Between Two Points on The Real Number Line B is _________ A & C if and only if A,B and C are distinct collinear points Between a set of points consisting of two points on a line called endpoints and all points between the endpoints. Line Segment Distance between endpoints Length or Measure of A Line Segment segments that have the same measure Congruent Segments the point of that the line segment that divides the segment into two congruent segments Midpoint of A Line Segment any line or subset of a line that intersects the segment at its midpoint Bisector of A Line Segemtn Line RS is the sum ____ _______ _________, line RP and PS, if point P is between points R and S Two Line Segments A And B are ___ ____ ____ of pooint P if A, B, and P are collinear and P is not between A and B On One Side part of a line that sonsists of a point on the line called an endpoint and all the points on one side of the endpoints Ray two rays of the same line with a common endpoint and no other point in common Opposite Rays a set of pints that is the union of two rays having the same endpoint Angle an angle that is the union of opposite rays Straight Angle an angle whose degree measure is greater than 0 but less than 90 Acute Angle an angle whose degree measure is 90 Right Angle an angle whose degree measure is greater than 90 but less than 180 Obtuse Angle angles that have the same measure Congruent Angle a ray whose endpoint is the vertex of the angle and that divides the angle into two congruent angles Bisector of An Angle a closed figure in a plane that is the union of line segments such that the segments intersect only at their endpoints and no segments share a common endpoint Polygon a polygon that has exactly three sides Triangle a triangle that has no congruent sides Scalene Triangle a triangle that has two congruent sides Isosceles Triangle a triangle that has three congruent sides Equilateral Triangle a triangle that has three acute angles Acute Triangle a triangle that has three congruent angles Equangular Triangle a triangle that has a right angle Right Triangle a triangle that has an Obtuse angle Obtuse Triangle lines that are in the same plane but have no points in common or have all points in common Parallel Lines two lines that intersect to form right angles Perpendicular Lines