Compare the slopes of segment AB and segment AC. What do you notice?
What does that tell you about these lines?
When a figure is reflected what is true about the corresponding angles?
What about corresponding sides? Specifically how does ∠B compare to ∠B' and segment BC and segment B'C?
Use the eTool below to help solve the problem.
Click the link at the right to view full version of the eTool: Int1 7-109 HW eTool.