Lesson 3.2

Today in class we learned about how to use rep-tile triangles to construct larger similar triangles. A rep-tile in math is any shape that, in a group with identical shapes can fit to gather to make a larger version of the shape. For example, a square is a rep-tile because if you fit four squares together it creates a larger square. An example for a non-rep-tile is a hexagon because no matter how many hexagons you fit together you can't create a larger hexagon. So today we split up into groups and each group recieved a bag of pattern-block triangles. Each group received a bag of either, isosceles, scalene, or right tringles. Then, each group would have to figure out how to use the given triangles to create a larger version of their triangles. We would use the information we found to answer questions in the "Stretching and Shrinking" book section 3.2 Afterwards, as a class we reviewed our answers and learned that all triangles are rep-tiles.