Correct, M is the midpoint of AB, so MA equals MB., Points on the same straight line are collinear., A seesaw balances when the point is in the middle., If MB is 6 cm and M is the midpoint, MA is 6 cm., Point W is the midpoint, so WA equals WB., Incorrect, The midpoint can be anywhere on a line segment., If MA is 2 cm, the total length AB is 2 cm., A ruler has a midpoint M. If the left side AM is 2 cm, the right side MB is 10 cm., Collinear points never sit on the same straight line., A seesaw balances when the point is on one side.

UNIT 17.4

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