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Enclosing Squares

Can you find sets of sloping lines that enclose a square?

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Parallel Lines

How does the position of the line affect the equation of the line? What can you say about the equations of parallel lines?

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Perpendicular Lines

Position the lines so that they are perpendicular to each other. What can you say about the equations of perpendicular lines?

Painting Between the Lines

Stage: 3 and 4 Challenge Level: Challenge Level:1
You may find it useful to explore the equations of straight lines using the interactivity in Parallel Lines.