To find the length of \( BD \) given that \( BC = 17 \) and \( CD = 18 \), we assume that points \( B \), \( C \), and \( D \) are collinear. This implies that \( BD \) is the sum of \( BC \) and \( CD \).

Thus,

\[
BD = BC + CD = 17 + 18 = 35
\]

So, \( BD = 35 \).

Would you like further details or have any questions?

Here are 5 related questions:
1. If \( BC = 17 \) and \( BD = 35 \), what is \( CD \)?
2. If \( BD = 35 \) and \( CD = 18 \), what is \( BC \)?
3. If \( BC = 17 \) and \( BD = 35 \), what is the midpoint of \( BD \)?
4. If \( BC = 17 \) and \( CD = 18 \), how would the length of \( BD \) change if \( BC \) is doubled?
5. How do you calculate \( BD \) if \( BC \) and \( CD \) are perpendicular rather than collinear?

**Tip:** Always check whether points are collinear when summing segment lengths.

Learn how to calculate the length of BD in a geometry problem involving collinear points B, C, and D. Given BC = 17 and CD = 18, find the length of BD using basic geometric principles. Suitable for Grades 7-9.

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