#1
The ALTITUDE is
a line segment that connects a vertex of a triangle to a point on the
line containing the opposite side, so that the line segment is perpendicular to that line.
#2
The MEDIAN a line segment that connects a vertex of a triangle to the midpoint of the opposite side
Answer:
（-1,-1）（2,0）（4,-20）
Step-by-step explanation:
（-1,-1） = -5 › -6 √
（0,-9） = -9 › -6 ×
（2,0） = 8 › -6 √
（-3,6） = -6 › -6 ×
（4,20） = -4 › -6 √
