Lessons for G.GPE.B.5
The midpoint formulaWorking backwards from a midpoint and one endpoint to the other endpoint.Lesson
Parallel and perpendicular linesSame slope, different intercept, and why they never meet.Lesson
Slopes of perpendicular linesSlopes multiply to negative one: flip and change the sign.Lesson
Writing a parallel or perpendicular line through a pointTake the slope you need, then use point-slope.Lesson
Printable Worksheets
The midpoint formula worksheet (PDF)Printable worksheet with answer keyPreview
Parallel and perpendicular lines worksheet (PDF)Printable worksheet with answer keyPreview
Slopes of perpendicular lines worksheet (PDF)Printable worksheet with answer keyPreview
Writing a parallel or perpendicular line through a point worksheet (PDF)Printable worksheet with answer keyPreview