The equation for the y coordinate is the height of the building.
坐标的方程是楼的高度
And then from that start point, get the x-value. Same thing, from that instance, get the endpoint, from that end point get the x-value, square.
取得结束点,然后取得结束点的y坐标,然后求差开平方,然后同样求的y坐标。
How about the y coordinate?
坐标呢
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