7、A figure with four equal sides forming two inner obtuse Angles and two inner acute Angles; a rhombus or lozenge.
2、a triangle with two equal sides.
6、A square is a figure with four equal sides and four right angles.
3、An isosceles triangle has two equal sides and the two angles opposite those sides are equal.
9、any object having a shape similar to a plane geometric figure with four equal sides and four right angles.
8、(geometry) a plane rectangle with four equal sides and four right angles; a four-sided regular polygon.
1、Having equal sides and equal of polygons.
5、having four equal sides and four right angles or forming a right angle.
4、A square may be defined as a rectangle with four equal sides.