Here are the three theorems we talked about. In order to understand these theorems better, try drawing them out.
If two lines are parallel to the same line, then they are parallel to each other
If two lines are perpendicular to the same line, then they are parallel to each other
If one of two parallel lines is perpendicular to the transversal, then the other line is also perpendicular.
Here are the notes from yesterday. Have a nice weekend!
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