Proof: Right triangles inscribed in circles | High School Math | Khan Academy
4:36
Area of diagonal generated triangles of rectangle are equal | Geometry | Khan Academy
14:17
Inscribed angle theorem proof | High School Geometry | High School Math | Khan Academy
11:39
Area of inscribed equilateral triangle (some basic trig used) | Circles | Geometry | Khan Academy
10:46
The Pythagorean theorem intro | Right triangles and trigonometry | Geometry | Khan Academy
15:15
Triangle medians and centroids (2D proof) | Geometry | Khan Academy
9:36
Pythagorean theorem II | Right triangles and trigonometry | Geometry | Khan Academy
11:05
Circles: radius, diameter, circumference and Pi | Geometry | Khan Academy
9:56