Khan Academy 302d ago

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/geometry-tx/x790e3ac3e338c450:relationships-of-circles-including-radian-measure-and-equations-of-circles/x790e3ac3e338c450:properties-of-secants/v/proof-the-product-of-segments-of-intersecting-secants Let's prove that the product of the length of a secant segment and its external segment is equal to the product of the other secant segment and its external segment from the same point outside the circle. We'll construct similar triangles and use the properties of inscribed triangles to convince ourselves that this is always true. Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc