10. Carey is making 6 costumes for the school play. Each costume requires 1 1/2 yards of material. How many yards of material should Carey buy?

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

Assemble the proof by dragging tiles to the statements and reasons column

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