Circle theorem Flashcards
IT IS THE DISTANCE FROM THE CENTER TO ANY POINT ON THE CIRCLE.
RADIUS
IT IS A STRAIGHT LINE SGEMENT THAT PASSES THROUGH THE CENTER OF THE CIRCLE AND WHOSE ENDPOINTS LIE ON THE CIRCLE.
DIAMETER
IS A LINE THAT INTERSECTS A CIRCLE AT EXACTLY ONE POINT.
TANGENT
R …
RADIUS
- If a circle has an ‘o’ noted on it, it normally notes the
Middle of the circle (origin)
Which will be the longest in length of any circle
Circumference
Half a circle is called:
semi circle
A line that touches the circumference of a circle at one point is called a:
Tangent
The diameter is twice the length of the
radius
The radius is half the length of the
diameter
A section of the circle created by two radii.
Sector
A sector is
- A sector consists of the area created by an arc and two radii
- part of a circle’s area
Like a slice of pizza
‘A line that goes across the circle but does not go through the origin’
A chord
What is the difference between a radius and a chord
A radius goes from the origin to the circumference. A chord does not touch the origin of the circle.
Formula for circumference of circle, when you have the radius
C= 2 Pi r
