The value of CD in the given diagram will be 15 so option (C) will be correct.
What is congruence?
If two figures are exactly the same in sense of their length side all things then they will be congruent.
A geometric figure is said to be congruent or to be in the relation of congruence if it is possible to superimpose it on another so that their whole surfaces match.
Given,
side CD = side GI
3x - 6 = x + 8
2x = 14
x = 7
So,
CD = 3(7) - 6
CD = 15
Hence the value of the CD will be 15 units.
To learn more about congruent,
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