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Easy: Points in the same quadrant
When two points share an x- or a y-coordinate, the distance between them is the difference of the other coordinates. If the points are on opposite sides of an axis, that is the same as adding their distances from the axis.
Find each distance or perimeter in grid units.
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The y-coordinates match, so use the x-coordinates: |−3 − 4| = 7. Or count 3 to the y-axis and 4 more past it.
Find the width from the x-coordinates and the height from the y-coordinates, then add all four sides: 2 × width + 2 × height.
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