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Crossed Lines
The equations of two intersecting lines are given. The challenge is to use Pythagoras’ theorem to show that the triangle formed by the lines and the y-axis is a right-angle. The point of intersection is determined by solving simultaneous equations.
Each example is derived from a pair of perpendicular lines. There is then a proof that the product of perpendicular lines is always -1.
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Crossed Lines: presentation 738.96 KB
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Crossed Lines: support file 11.57 KB
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Crossed Lines: printed resource 367.63 KB
Show downloads
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Crossed Lines: presentation 738.96 KB -
Crossed Lines: support file 11.57 KB -
Crossed Lines: printed resource 367.63 KB
Download all files as a .zip936.55 KB
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