Khan Academy 306d ago

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/math/geometry-tx/x790e3ac3e338c450:coordinate-geo/x790e3ac3e338c450:parallel-and-perpendicular-lines-in-figures/v/triangle-altitude-equation Given a triangle on a coordinate plane and a base that is neither horizontal nor vertical, let's find the equation of the line that contains the altitude of the triangle relative to that base. We can use the fact that the slope of the altitude is perpendicular to the slope of the base. That means the two slopes are opposite reciprocals of each other. 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