Chapter Overview
This chapter revisits the concept of circles and explores tangents to a circle. It focuses on properties and theorems related to tangents drawn from a point outside a circle, and the relation between a tangent and the radius. The chapter builds a strong geometric understanding through proofs and diagrams.
Important Keywords
- Circle: The set of all points in a plane that are equidistant from a fixed point (center).
- Radius: A line segment from the center to any point on the circle.
- Diameter: A chord that passes through the center of the circle, equal to twice the radius.
- Tangent: A line that touches the circle at exactly one point.
- Secant: A line that intersects the circle at two points.
- Point of Contact: The point where a tangent touches the circle.
Detailed Notes
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