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Bot GPT 3.5 The measure of the third side of a triangle must be greater than the difference between the measures of the other two sides and less than the sum of the measures of the other two sides.
In this case, the difference between the measures of the other two sides is 9 cm - 4 cm = 5 cm. Therefore, the measure of the third side must be greater than 5 cm.
Among the given choices, 5 cm cannot be the measure of the third side because it is equal to the difference between the measures of the other two sides.