equilateral triangle - A triangle that has all three sides the same lenght., hexagon - A polygon with exactly 6 sides and 6 angles., Isosceles triangle - A triangle that has at least two sides the same length.., obtuse triangle - A triangle that has one obtuse angle. , polygon - a two-dimensional closed figure made with three or more straight line segments that do not cross over each other. , right triangle - A triangle that has one right angle., scalene triangle - A triangle that has no sides the same length., trapezoid (exclusive) - A quadrilateral with exactly one pair of parallel sides. , trapezoid (inclusive) - A quadrilateral with at least one pair of parallel sides., triangle - A polygon with exactly 3 sides and 3 angles. , parallelogram - A quadrilateral with opposite sides parallel and equal inn length., rhombus - A quadrilateral with all sides the same length., line of symmetry - A line that dives a shape into two mirror images.,

Two-Dimensional Figures

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