Statement
1.
[tex]BD\text{ is the altitude and }the\text{ median of }\Delta ABC[/tex]
2.
[tex]AD=DC[/tex]
3.
[tex]\angle ADBand\angle CDB\text{ are right triangles}[/tex]
4.
[tex]BD=BD[/tex]
5.
[tex]undefined[/tex]
Reason
1. Given
2. Because BD is the median
3. Because BD is the altitude (def of perpendicular lines)
4. Reflexive property
