Shapes with four sides.
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A regular quadrilateral is a shape with four sides which are all the same
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An angle is formed when two lines (or line segments) meet at a single point. Angles are classified into distinct groups based on their measurement in degrees. Acute angles measure
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The triangle appears to be an isosceles, which means two of the legs(sides) are the same length. If the shape is a quadrilateral, then the opposite sides must be parallel. And if
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