Proof: Intersecting Secants Theorem (Secants Intersecting Outside a Circle) | Geometry

How do we prove the intersecting secants theorem? This theorem, sometimes simply called the secant theorem, tells us about the situation where two secants intersect outside a circle To see what the theorem is and how it is proved, watch the full video lesson! We get into similar triangles, the angle angle similarity postulate, congruent inscribed angles, and more!


I hope you find this video helpful, and be sure to ask any questions down in the comments!

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