Answers

2016-01-11T21:44:04+08:00
Anything of four sides are quadliraterals, examples here are square, which is an equal in angle (90°) and length, rectangle, rhombus, trapezoid, parallelogram, trapezium, etc.
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2016-01-12T14:10:45+08:00
Quadrilateral is a four sided polygon
example, square rectangle etc.
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