Rachel
About
Khan Academy on a Stick
Perímetro de un Polígono
Perímetro y área de rectángulos
Perímetros y Áreas Básicas
Área y perímetro
Perímetro de un Polígono
Your browser does not support video. Please get the latest version of Google Chrome, Firefox, IE, or Safari. Alternately, you can try the link below if you have VLC or another media player installed.
If the above player doesn't work, you can
try this direct link
.