## Definitions, Postulates, Theorems

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gtaten14  on December 12, 2010

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# Definitions, Postulates, Theorems

 A ________ includes 2 points and all the points between that lie on the line containing the two pointssegment
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#### Definitions

A ________ includes 2 points and all the points between that lie on the line containing the two points segment
A ________ triangle is a triangle with three sides of different lengths scalene
________ angles are a pair of nonadjacent angles formed by two intersecting lines vertical
An _______ is formed by two rays that share a common endpoint called the ________ angle, vertex
A __________ is an example that proves a statement wrong counterexample
An _________ angle is an angle whose measure is more than 90 but less than 180 obtuse
The bisector of the vertex angle of a right triangle is the ____________ ___________ of the base perpendicular bisector
______________ lines are lines that intersect to form a right angle perpendicular
An ___________ triangle is a triangle whose angles are all equal in measure equiangular
An _________ __________ is a ray that has an endpoint on the vertex of the angle and divides the angle into two angles of equal measure angle bisector
___________ points are points that lie on the same line collinear
___________ lines are lines that lie in the same plane and do not intersect parallel
___________ angles are two angles whose measures have the sum 180 supplementary
An ________ angle is an angle whose measure is less than 90 acute
A _________ pair is a pair of adjacent such that the exterior sides form a line linear
An ________ triangle is a triangle with three acute angles acute
A ________ of a triangle is a segment connecting a vertex to the midpoint of the opposite side median
A polygon is __________ if all the sides are congruent and all the angles are congruent regular
A _________ is a tool used to measure the size of an angle in degrees protractor
____________ angles are two angles whose measure have the sum 90 complimentary
A ________ is a quadrilateral with two pairs of consecutive sides congruent kite
A _________ is a quadrilateral with 4 congruent sides rhombus
_________ points are points that lie in the same plane coplanar
A _______ triangle is a triangle with exactly one right angle right
An __________ triangle is a triangle with one obtuse angle obtuse
An ___________ triangle is a triangle with at least two congruent sides isosceles
A ________ angle is an angle whose measure is 90 right
An ________ of a triangle is a segment through a vertex perpendicular to the opposite side altitude
An __________ triangle is a triangle with three sides of equal length equilateral
A _________ ___________ is a line which divides a segment into two equal parts and is also perpendicular to the line segment perpendicular bisector

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