Tangents.

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Presentation transcript:

Tangents

On the same plan as a circle That intersects the circle Tangents A tangent is a line On the same plan as a circle That intersects the circle In exactly one point

Tangents A B Point of tangency C

Tangents A common tangent is a line, ray, or segment that is tangent to two circles in the same plane.

Tangents common tangents

Tangents common tangents

Tangents A line is tangent to a circle if and only if it is Perpendicular to a radius at a point of tangency

Tangents l is tangent S If and only if l T

the same exterior point Tangents If two segments from the same exterior point are tangent to a circle then they are congruent

Tangents If are tangent B A Then D C