Скачать или смотреть Tangent Lines & Secant Lines of Circles, Walk Around Problem - Geometry

This geometry video tutorial provides a basic introduction into tangent lines and secant lines as it relates to circles. A secant line touches a circle at two points. A tangent line touches a circle at exactly one point. The radius of a circle and a tangent line are always perpendicular. This video also explains how to solve the walk around problem in geometry.

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Tangent Tangent Angle Theorems:
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Circle Theorems:
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Distance Between Point and Line in 2D & 3D:
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Area of a Triangle With Vertices:
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