Answer:
c) options a,b,d are true
Explanation:
because they had mentioned that angle BDC is 90 degree
so,
a ) perpendicular line always forms 90 degree
b ) The line connects AC at 90 degree
d ) BD states the hight or altitude of the triangle
b) option c
because they had not mentioned that its 90 degree
A median is a line segment that connects a vertex to the central point of the opposite side. Hence, a median needs not to be perpendicular every time.