Proof Prompt (B)
- Tim Brzezinski
Theorem: If two lines are perpendicular, then they cross to form congruent, adjacent angles. (Note that this is the CONVERSE of this theorem.) Write a 2-column (or paragraph) proof that formally proves what this applet informally illustrates. Be sure to set up an appropriate diagram, state what is given, and state what needs to be proven. Then prove it!