polygon, A closed shape with three or more straight sides., side, A line segment that joins two vertices in a shape or two-dimensional figure., angle, Two intersecting lines or surfaces at or close to the point where they meet., figure, A geometric form consisting of any combination of points, lines, or planes., equal, Exactly the same amount or value, congruent, The same shape and size, but we are allowed to flip, slide or turn., line, A straight one- dimensional figure that has no thickness and extends endlessly in both directions., acute angle, An angle that measures less than 90 degrees., obtuse angle, An angle whose measure is greater than 90° and less than 180°, parallelogram, A flat shape with 4 straight sides where opposite sides are parallel.

Math (2-D shapes)

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