Examples, videos, and solutions to help Grade 3 students learn how to decompose quadrilaterals to understand perimeter as the boundary of a shape.
Common Core Standards: 3.G.1
Trista uses all seven of her tangram pieces to make a square as shown. One side of the large square is 4 inches long. What is the total area of the two large triangles? Explain your answer.
The perimeter is the boundary or “fence” of the shape.
Area is the space inside the shape.
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