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Ireland: choose your country
Transition Year maths · I.1 · Coordinate Geometry

Find a midpoint or an endpoint

The midpoint averages the x’s and averages the y’s.

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  1. Find the midpoint of the segment with endpoints (3, −1) and (7, 11).

    Answer: x: 5; y: 5

  2. Find the midpoint of the segment with endpoints (−2, −12) and (12, 0).

    Answer: x: 5; y: -6

  3. Find the midpoint of the segment with endpoints (−9, −5) and (−3, 7).

    Answer: x: -6; y: 1

Tip: The midpoint averages the x’s and averages the y’s.

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