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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