The Brownie Problem

Autor:Steve Phelps

A rectangular hole is cut in the interior of a larger rectangle. Where should the red line be located to divide the remaining area into two equal areas (not congruent pieces)

Nuevos recursos

Function Art 3D - Flower
Congruent Sides & Angles in △s: Exploration
Linear Equation Graphs: Thin Slice
Modifiable Right Triangular Prism
Slope Illustrator (2)

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lots of stuff (Triangle, Rectangle, Rhombus)
Circle touching in circle: ratio of radii
Quadrilateral classifications
geogebra8A
Basic Constructions

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Ángulos
Cuadrado
MCM y MCD
Continuidad
Semejanza