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Imagine an infinitely large sheet of square dotty paper on which you can draw triangles of any size you wish (providing each vertex is on a dot). What areas is it/is it not possible to draw?
Can you draw triangles of area 1, 2, 3, ?.. square units?
Can you draw a triangle with an area of 1.5 square units?
What is the area of the smallest triangle you can draw? Is this triangle unique?
How many triangles of of area 2 square units can you draw and can you create "families" or "groups" of these triangles?