DEFINITION
What type of conic section do we get when a plane cuts a cone perpendicular to its axis?
A circle
What do we call the distance from the center of a circle to any point on it?
Radius
In the equation (x - h)^2 + (y - k)^2 = r^2, what does (h,k) represent?
the center of a circle
What circular shape allows cars and bikes to move smoothly?
Wheels
A circle is considered similar to a ellipse because..?
Both are defined by a constant distance
True or False: All points on a circle are the same distance from the center.
True
What is the equation of a circle centered at the origin with radius r?
x2+y2=r2
Name one natural example of a circle in real life
bubbles
In what position should be the plane to form a circular conic section?
Completely perpendicular (horizontal) to the axis
What kind of symmetry does a circle have?
Perfect symmetry in all directions (rotanional or linear)
Coordinates of a circle when centered at its origin
(0,0)
Name one technological example in real life
CDS, CAMERA LENSES