It is known that AC = 32cm, BC = 9cm, CD = 12cm Find the lengths of the segments AB and BD.

Let’s calculate the length of the segment BD (since the segments BC and CD follow each other, there will be no difficulty in this):

9 + 12 = 21 cm – is the length of the segment BD.

Let’s calculate the length of the segment AB (since the segment BC is a part of the segment AC, no difficulty in the calculations is foreseen here either):

32 – 9 = 23 cm – is the length of the segment AB.

Answer: BD is 21 centimeters long; the length of the segment AB is 23 centimeters.