Theorems with Tangents to Circles

Ms. Matlock, Apr 17, 2018


  • 1. Tangent Lines (P1)
  • 2. Tangent Lines (P2)
  • 3. Tangent Lines (P3)
  • 4. Proof with Tangent Line
  • 5. Extension: 1
  • 6. Extension 2:

1.

Tangent Lines (P1)

Definitions
Drag the green dots to see more examples of the definitions related to circles and their tangent lines.
A TANGENT LINE is a line in the plane of the circle that intersects the circle in exactly one point.
The POINT OF TANGENCY is the point where a circle and a tangent intersect.
A TANGENT-CHORD ANGLE is an angle formed by an intersecting tangent and chord has its vertex “on”; the circle.
(1)
A) What is a tangent line?[br][br]B) What are two important parts of a tangent line and the circle it is tangent to?
– Ms. Matlock

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Information