Let's prove that if a diameter of a circle bisects a chord, it is perpendicular to the chord. We'll construct congruent triangles to convince ourselves that this is always true.

Wave particle duality | Chemistry | Khan Academy
3.3K views

Energy of satellite systems | AP Physics | Khan Academy
2.8K views

Introduction to AP Physics 1 | Khan Academy
4.9K views

Ohm's law | Physics | Khan Academy
5.5K views

Series and parallel circuits | Physics | Khan Academy
3.9K views

Intro to electric circuits | Physics | Khan Academy
5.9K views