unit 2 part 2 vocab Flashcards
1
Q
median
A
a line segment joining a vertex to the midpoint of the opposite side (centroid)
2
Q
perpendicular bisector
A
line that bisects another line segment at a right angle (circumcenter)
3
Q
altitude
A
line that passes through 2 specific points of the triangle and bisects 2 segments (orthocenter)
4
Q
angle bisector
A
ray that divides an angle into two equal parts (incenter)
5
Q
slope formula
A
m = y2-y1/x2-x1
6
Q
midpoint formula
A
M = x1+x2 / 2, y1+y2 / 2
7
Q
slope for vertical lines
A
undefined (x=a)
8
Q
slope for horizontal lines
A
zero (y=b)
9
Q
parallel lines
A
lines are never intersecting, slopes are always equal
10
Q
perpendicular lines
A
lines intersect to form a 90 degree angle, the slopes are negative recipricols
