3. Find BD in the following diagram.
BD=
![3 Find BD in the following diagram BD class=](https://us-static.z-dn.net/files/d48/9aa467846b6fc864d95d969f2f9889b4.png)
Answer: BD = 28
Step-by-step explanation:
BC = 21, CD = 7 Given
BC + CD + BD Segment Addition Postulate
21 + 7 = BD Substitution
28 = BD Add Like Terms