Power of a point
Summary
The power of a point with respect to a circle is the square of its distance to the centre minus the square of the radius. It is positive outside the circle, zero on the circle and negative inside.
What this node needs for W2
- edge instance_of in: at least two examples (0 of 2)
- edge not_instance_of in: at least one non-example (0 of 1)
- edge specializes both: the more general notions and the special cases (0 of 1)
The writing levels say how complete the text of a node is. They do not measure its truth.
What depends on this
3 nodes use this node, directly or through other nodes.
- Intersecting secants theorem 0J5XR7BW2S
- Tangent–secant theorem 0QX7E9KAAX
- Intersecting chords theorem 0YQQYET8YQ
Sources
- Web https://en.wikipedia.org/wiki/Power_of_a_point, lead section
What links here
Definitions
- Power of a point 00PPY3RPNB
Used by
- Intersecting secants theorem 0J5XR7BW2S
- Tangent–secant theorem 0QX7E9KAAX
- Intersecting chords theorem 0YQQYET8YQ