JST17 5. Section 1h Perpendicular lines

Auteur :Jill Stephenson, Integral Resources

You can move the blue line by moving either of the green points. The red line is perpendicular to the blue line. What do you notice about the gradients of the perpendicular lines?

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bewijs stelling van Pythagoras
Pythagorean Theorem: Extension Exercises
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e.g.6.4
Ellipse (3) - Turning it around
Notice slopes of Perpendicular Lines
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