If `AB cong CD` then

Options

A. `AB < CD`
B. `AB+CD =0`
C. `AB=CD`
D. `AB > CD`

Answer

To solve the question "If AB is congruent to CD, then...", we need to understand what congruence means in the context of geometry, particularly with triangles or line segments.

### Step-by-Step Solution:

1. **Understanding Congruence:**
- Congruence in geometry means that two figures have the same shape and size. For line segments, this means they have the same length.

2. **Given Information:**
- We are given that line segment AB is congruent to line segment CD. This can be written as:
\[ AB \cong CD \]

3. **Implication of Congruence:**
- Since AB is congruent to CD, we can conclude that the lengths of these segments are equal. Therefore:
\[ \text{Length of } AB = \text{Length of } CD \]

4. **Conclusion:**
- The statement "If AB is congruent to CD" implies that both segments are equal in length. Thus, we can state:
\[ AB = CD \]

### Final Answer:
If \( AB \cong CD \), then \( AB = CD \).

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