A cat is sitting on a fence in the backyard and is looking at some birds at the top of a tree. There is a hedge between the cat and the tree. The cat can just see over the top of the hedge. The horizontal distance from the hedge to the fence is the same as the horizontal distance from the tree to the hedge. The height of the hedge is 4 m. The height of the tree is 7m.
How high is the fence?

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when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

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80 the answer is 80

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