Math in an envelope
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An envelope is an object which is used a lot in everyday life. We have all used envelopes to put letters or important documents into and as students we have often had to use them. However, as well as being very useful objects, envelopes are also interesting to analyse from a mathematical point of view. Their geometrical shape is of interest firstly to people who have to make them and secondly to maths students who can use them to review a few interesting concepts such as line symmetry and similarity. I hope you enjoy playing with these envelopes and discovering the maths contained "inside them"
Knowledge area
Educational context
Resource type
Collections
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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
End user
learner
Contributions
publisher
INTEF
11/01/2026
publisher
INTEF
11/01/2026
publisher
INTEF .
11/01/2026
publisher
INTEF
11/01/2026
author
Ángel Cabezudo Bueno
11/01/2026
publisher
Instituto de Tecnologías Educativas (ITE)
11/01/2026
editor
Instituto de Tecnologías Educativas (ITE)
11/01/2026
technical validator
José Luis Alcón Camas
11/01/2026