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11 Cards in this Set
- Front
- Back
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angle sum theorum
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the angles of a triangle equal 180
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ruler postulate
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the points in a line can be numbered so that the postitive number differences measure distances
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protractor postulate
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the rays of a half rotation can be numbered from 0-180 so that positive number differences measure angles
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betweeness of points
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if A-B-C, then AB+ BC= AC
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exterior angle theorum
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an exterior angle of a triangle is greater than either remote interior
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triangle inequality theorum
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the sum of any two sides of a triangle is greater than the third side
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the parallel postulate
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through a point not on a line, there is exactly
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the midsegment theorum
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a midsegment of a triangle is parallel to the third side and half as long
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the side splitter theorum
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if a line parallel to one side of a triangle intersects the other two in different points, it divides the sides in teh same ratio
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concurrent lines
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lines that contain the same point
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midpoint
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the point that divides a line segment into two equal segments
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