Point D is taken on the side AB of the triangle. What is the side AB of the triangle, if AD = 5cm, BD = 6cm.

Given:
triangle ABC,
point D belongs to segment AB,
AD = 5 centimeters,
BD = 6 centimeters.
Find the length of the side AB -?
Decision:
Consider a triangle ABC. Since point D belongs to the segment AB, the length of the segment AB = AD + DB, AB = 5 centimeters + 6 centimeters = 11 (centimeters).
Answer: 11 centimeters.



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