TALK the TALK Connecting Similar Triangles
and Slope of a Line
Audra was absent for this lesson on the connection between
similar triangles and the slope of a line. Write an explanation of
what you learned in this lesson. Be sure to include how you can
use a graph to determine the slope of a non-vertical line, and
how you can use similar triangles to show the slope is the same
between any two points on the line.
YA
15
10
B
5
-20-15-10
10 15 20
CA
-20
D
25