Slope Triangles

This activity helps students use similar triangles to see that the slope `m` is the same between any two distinct points on a non-vertical line in the coordinate plane. This activity could be used for 8.EE.6 and 8.F.3. The URL shortcut for this activity is https://tinyurl.com/slope-triangles. This activity can be followed by https://tinyurl.com/latticepoints.

By Ivan Cheng