DIFFERENCE OF SQUARES Algebraic Expressions and Equations An important formula to know, the difference of squares identity is derived geometrically in the video for this practice plan. Mathletes will then try to recognize the difference of squares structure... Read More
MINI #32 - USING ALGEBRA AND NUMBER SENSE AS SHORTCUTS Algebraic Expressions and Equations Problem Solving (Misc.) Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #20 - USING THE DIFFERENCE OF SQUARES TO SOLVE PROBLEMS Algebraic Expressions and Equations Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #11 - TANGENT SEGMENTS & SIMILAR TRIANGLES Plane Geometry Proportional Reasoning Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #39 - CIRCLES AND AREA REVISITED Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #44 - RECOGNIZING SQUARES AND SOLVING A SIMPLER PROBLEM Algebraic Expressions and Equations Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #58 - LABELING FIGURES: A GEOMETRY PROBLEM SOLVING STRATEGY Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #66 - SIMILARITY AND PROPORTIONAL REASONING Plane Geometry Proportional Reasoning Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #84 - TRAPEZOIDS AND TRIANGLES Coordinate Geometry Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #87 - USING GEOMETRIC MODELS TO DETERMINE PROBABILITY Coordinate Geometry Plane Geometry Probability, Counting and Combinatorics Video by Art of Problem Solving's Richard Rusczyk. Read More