The length of the segment AB is equal to 15 cm. Find the length of the segment CD if AD = 12 cm and CB = 10 cm.
June 26, 2021 | education
| Let’s conventionally draw a segment AB.
Find out how Tochi C and D are located.
They are not located as it seems that D is closer to A, and C to B, but vice versa.
This can be explained by writing the sum of the segments AD and CB: AD + CB = 10 + 12 = 22cm.
It is more than AB.
Thus, CD is a superposition of line segments.
And now we will write CD like this: CD = AD + CB – AB = 22 – 15 = 7.
Answer: the length of the CD segment is 7cm.
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