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### 11 Cards in this Set

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