trapezoid - at least 1 pair of parallel sides, polygon - shape with all straight sides, parallelogram - 2 pairs of parallel sides, square - quadrilateral with all right angles and all equal sides, rectangle - quadrilateral with all right angles, right triangle - triangle with one angle equal to 90 degrees , scalene triangle - triangle with no equal sides, isosceles triangle - triangle with two equal sides, obtuse triangle - triangle with one angle grater than 90 degrees, acute triangle - angle with one angle smaller than 90 degrees , quadrilateral - shape with four sides, 2D figure - flat shape, rhombus - a quadrilateral with all equal sides , pentagon - polygon with five sides,

2D Figures

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