Question

in this why is d the midpoint of DC? ​

Answer 1

Answer:

bcc isosceles triangle

bcz the ab and ac have same side

ad is median and d is both side of 90°

Answer 2

Answer:

because AB=AC,and AD is a perpendicular to BC. Therefore, BD=DC=1/2BC.

BD=1/2BC

2BD=BC.