quadrilateral ABCD.4. A (S, 1); B (1, 5) and C (-3, -1) are the vertic

1.	quadrilateral ABCD.4. A (S, 1); B (1, 5) and C (-3, -1) are the vertices of AABC. Find the length of median AD.
Answer» Find the coordinate of D: D is the midpoint of BC coordinates of D=(1+(-3)/2,5+(-1)/2) (-1,2) Find the length AD: =√(y2-y1)^2+(x2-x1)^2 =√(1-2)^2+(5-(-1)^2 =√37 Answer: The length of AD is √37 units

quadrilateral ABCD.4. A (S, 1); B (1, 5) and C (-3, -1) are the vertices of AABC. Find the length of median AD.

Answer»

Find the coordinate of D:

D is the midpoint of BC

coordinates of D=(1+(-3)/2,5+(-1)/2)

(-1,2)

Find the length AD:

=√(y2-y1)^2+(x2-x1)^2

=√(1-2)^2+(5-(-1)^2

=√37

Answer: The length of AD is √37 units