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MINI #18 - AREAS OF IRREGULAR CONVEX POLYGONS

Plane Geometry

Video by Art of Problem Solving's Richard Rusczyk.

MINI #43 - USING SIMILARITY TO SOLVE GEOMETRY PROBLEMS

Plane Geometry
Proportional Reasoning
Solid Geometry

Video by Art of Problem Solving's Richard Rusczyk.

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.

MINI #20 - USING THE DIFFERENCE OF SQUARES TO SOLVE PROBLEMS

Algebraic Expressions and Equations

Video by Art of Problem Solving's Richard Rusczyk.

MINI #23 - PERFECT SQUARES/USING A SIMPLER CASE TO SOLVE A PROBLEM

Algebraic Expressions and Equations

Video by Art of Problem Solving's Richard Rusczyk.