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**Day three: The tangent line of a
Circle**

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by Nami Youn

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**Objective**

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to understand the properties of the tangent of a circle

**1. Perpendicular**

**Property : Any tangent line to
a circle is perpendicular to the radius drawn to the point of tangency.**

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Gsp file

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**2. The length of tangent line**

**Property : Tangent segments to
a circle from a point outside the circle are equal in length..**

__Gsp file__

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