trapezoid, trapezoid, triangle, triangle, area, area, perimeter, perimeter, volume, volume, parallelogram, parallelogram, rectangle, rectangle, scalene, scalene, equilateral, equilateral, isosceles, isosceles, square, square, axis, axis, coordinate, coordinate, plane, plane, origin, origin, hierarchy, hierarchy, acute, acute, obtuse, obtuse, right, right, rhombus, rhombus.

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