Chapter 6: Circles Flashcards
1
Q
Equation of a circle (say what is the radius and the centre):
A
(x-a)² + (y-b)² = r²
r = radius.
(a,b) = centre
2
Q
What is a perpendicular bisector of a chord?
A
Goes through the centre of a circle and is 90° to the chord.
3
Q
What is a chord?
A
A line segment that joins two points on the circumference of a circle.
