Shape
Copyright David & Cynthia Thomas, 2009
Area of Triangles--Directed Activity: Lattice Triangles
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Focus |
Areas of lattice triangles |
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Technologies |
Paper & pencil |
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Background |
Lattice triangles are triangles whose vertices are integer coordinates in the lattice’s coordinate system. Figure 2.2 shows triangles with integer coordinates of (0,0) (5,0) (2,3) (1,2) (5,1) (2,4) respectively. Each cell of the lattice is defined to have an area of one square unit.
Figure 2.2: Area by Lattice Techniques
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Tasks |
Determine the area of each triangle using the lattice to facilitate computation. |
