SPECIAL RIGHT TRIANGLES Algebraic Expressions and Equations Plane Geometry Mathletes will become familiar with properties of 45-45-90 and 30-60-90 triangles. In this plan, the relationships between the sides of these two special right triangles will be derived. Then... Read More
MINI #21 - COUNTING RECTANGLES IN A GRID/SQUARES IN A LATTICE GRID Probability, Counting and Combinatorics Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #22 - GEOMETRY/30-60-90 RIGHT TRIANGLES Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #8 - GEOMETRY/AUXILIARY LINES & SPECIAL RIGHT TRIANGLES Plane Geometry Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #5 (PART 1) - PERFECT SQUARES/USING A SIMPLER CASE TO SOLVE A PROBLEM Probability, Counting and Combinatorics Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #5 (PART 2) - PERFECT SQUARES/USING A SIMPLER CASE TO SOLVE A PROBLEM Probability, Counting and Combinatorics Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #10 - SQUARES OF BINOMIALS & WORKING WITH REPEATING DECIMALS AND RADICAL EXPRESSIONS Algebraic Expressions and Equations Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #57 - NUMBER SENSE: LOOKING FOR PATTERNS Number Theory Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #59 - RATIOS Percents and Fractions Video by Art of Problem Solving's Richard Rusczyk. Read More
MINI #75 - STRATEGIC GUESSING USING DIVISIBILITY RULES Number Theory Video by Art of Problem Solving's Richard Rusczyk. Read More