3, because you cut a corner, you cut through where 3 sides meet.
3 sides
22,200
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What problem is there to show work for?
2/5 divide -3/10 can be rewritten as 2/5 * - 10/3. Which is -20/15 = -4/3 = -1 1/3
Move the figure 10 units to the right and then rotate it 90º
