parallelograms, and rectangles (parallelograms)
Each pair of opposite sides has equal slopes.
No shape is a square but not a parallelogram as all squares are parallelograms: All parallelograms have opposite sides parallel and of equal length, and opposite angles are equal. All squares have opposite sides that are parallel and of equal length, and opposite angles are equal; thus all squares are parallelograms. However, all squares also have all angles equal to 90o and all four sides equal, but some parallelograms have angles not all 90o and/or not all four sides of equal length; thus not all parallelograms are squares.
I'm not sure what you're asking for, but parallelograms always have parallel sides which are equal in length.
No but they are 4 sided quadrilaterals.
A rhombus is a parallelogram with 4 equal sides. Many parallelograms do not have 4 equal sides. All parallelograms have 2 pairs of equal opposite sides.
parallelograms, and rectangles (parallelograms)
Some do, some don't. A parallelogram that has equal sides is usually called either a "rhombus" or a "square". None of the other parallelograms do.
Each pair of opposite sides has equal slopes.
No shape is a square but not a parallelogram as all squares are parallelograms: All parallelograms have opposite sides parallel and of equal length, and opposite angles are equal. All squares have opposite sides that are parallel and of equal length, and opposite angles are equal; thus all squares are parallelograms. However, all squares also have all angles equal to 90o and all four sides equal, but some parallelograms have angles not all 90o and/or not all four sides of equal length; thus not all parallelograms are squares.
yes
its because there all equal sides and have 4 sides
I'm not sure what you're asking for, but parallelograms always have parallel sides which are equal in length.
rhombus
Yeah they have 4 equal sides Only some parallelograms have 4 equal sides. Such a parallelogram is called a rhombus. In general, a parallelogram has two different pairs of opposed equal sides. Like a rectangle given a sideways push at opposite corners.
Opposite angles/sides are equal.
No but they are 4 sided quadrilaterals.