co-ord geometry Flashcards
1
Q
Distance Between Two Points
A
d = √[(x2 - x1)² + (y2 - y1)²]
2
Q
Midpoint of a Line Segment
A
((x1 + x2)/2; (y1 + y2)/2)
3
Q
prallel lines have
A
same gradiens
4
Q
perpendicualr lines
A
switch and swap
m 1 × m 2
=−1
5
Q
Equation of a Circle
A
( x − a ) squared + ( y − b ) squared = r squared
6
Q
A
