Definition Picture Collinear Noncollinear You can assume . . . You should NEVER assume . . . Name _________________________ Date _______________ Period ____ Geo Notes 1.3 1.3 The ABC’s Assumptions, Betweenness, Collinearity : Recognize collinear and non collinear points, when a point is between two others, and apply the triangle inequality. Collinear vs. Noncollinear C B Betweenness & The Triangle Inequality In order to say a point is BETWEEN two other points: __________________________________________ __________________________________________ A T R X O Y The Triangle Inequality: _________________________________________ _________________________________________ _________________________________________ _________________________________________ X 20 13 What range of values can x be in? Note: 11 14 24