Triangles ABC and CDE are called _ triangles.
The slope of the line through AE can be written as
This is a _ relationship because _
"The equation of the line AE is written as _
Similar triangles.
The slope of the line through AE can be written as m = (y2-y1) / (x2-x1).
This is a proportional relationship because the ratio of the corresponding sides of similar triangles is constant.
The equation of the line AE is written as y = mx + b.