What is a grade in geometry?

For questions like a roads grade is ~something~. I don't really understand what the grade of a road is.

Anonymous2012-03-13T16:41:15Z

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"Grade" means slope, which can be given as a percentage. The slope of a line on a coordinate plane can be found by the formula: Slope=(y2-y1)/(x2-x1).

peabody2012-03-13T23:41:06Z

grade of a road is the slope or incline of the road. ie How steep.