Understanding the gradients of perpendicular lines.

Rotate the line, and the triangle which defines its gradient, to see why the gradients of perpendicular lines are negative reciprocals.
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Lesley Skipper —

 
资源类型
活动
标签
cowey  gradient  lesley  perpendicular 
目标群组(年龄)
3 – 19+
语言
English
 
 
 
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