Rachel
About
Khan Academy on a Stick
Area of a trapezoid
Perímetro y área de formas no comunes
Resumen de Cuadriláteros
Propiedades de Cuadriláteros
Área de un paralelogramo
Area of a trapezoid
Area of a kite
Perímetro de un Polígono
Perímetro y Área de un Polígono No Estandar
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