Do points A, B and C lie on the same straight line if AC = 5 cm, AB = 3 cm, BC = 4 cm?

univerkov | May 30, 2021 | education

Let first A be the beginning of the segment, C is the end of the segment, therefore,
AC = AB + BC = 3 cm + 4 cm = 7 cm.
But according to the condition AC = 5 cm.
This means that this arrangement is not correct.
You can similarly check that any movement of points will also not be correct, since
5 + 3 = 8> 4,
5 + 4 = 9> 3.
Thus, points A, B and C cannot lie on the same straight line.

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