square and rhombus
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All quadrilaterals have 4 sides hence the root word quad. If you have 4 equal sides with 4 equal angles you have your basic square.
In the instance of a triangle it is equilateral. Most quadrilaterals have equal sides as well (such as a rectangle with two sets of equal sides).
yes quadrilaterals equal 360, triangles equal 180. and shapes with five sides is 540. every time a new side is added add 180
P= Add all sides A= LxW
The sum of the exterior angles of all polygons equals to 360⁰.Since only the sum of the interior angles of all quadrilaterals equals to 360⁰, the polygon must have 4 sides.