MINI #18 - AREAS OF IRREGULAR CONVEX POLYGONS Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #43 - USING SIMILARITY TO SOLVE GEOMETRY PROBLEMS Plane Geometry Proportional Reasoning Solid Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #80 - CIRCLES AND TRIANGLES REVISITED Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MASS POINTS (PARTS 1 & 2) Plane Geometry Proportional Reasoning Learn what Mass Points are and how to use them to solve problems involving side lengths and areas of triangles. Mass Points Part 1 (above) covers the fundamentals of Mass Points, while Mass Points... Read More