Collinearity, Between, and Assumptions - Lesson 1-3
Today, we began by covering the concept of collinear and noncollinear points. We also talked about what it meant for a point to be between two other points.
We then discussed the fact that there are only two possibilities given three points...one that determines a triangle and one that doesn't. This should allow you to determine a range of values for the length of third side of a triangle given the length of the other two:
We then discussed the
things we could assume from a diagram and those we couldn't:
...and then worked through this example: