On the segment AB with a length of 23 cm, points C and D were marked so

On the segment AB with a length of 23 cm, points C and D were marked so that AC = 15 cm, DB = 12 cm. What is the length of the segment CD?

Based on the data of the problem, point C lies 15 cm from point A, and point D – 12 cm from the other edge of the segment, point B. The total length of the segment is 23 cm.Total, we get segments AC – 15 cm, BD – 12 cm. We can find the length of the segment CD in this way –

CB = AB – AC = 23 – 15 = 8 cm.

СD = DB – CB = 12 – 8 = 4 cm.

Answer: the length of the CD segment is 4 cm.