coordinate geometry Flashcards
1
Q
midpoint
A
x1+x2/2 , y1+y2/2
2
Q
distance between two points
A
r= root (x2-x1) + (y2-y1)
3
Q
equation of a circle
A
x^2+y^2 = r^2
c = (0,0)
radius = r
4
Q
how do you determine the intersects of a line and circle
A
solve simultaneously