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This just means that opposite sides in a shape (sides that 'look' at each other) are of equal lengths.
Only if it is a trapezoid (US usage) with one set of parallel sides, or a parallelogram with both sets of opposite sides parallel. The term quadrilateral only means that the shape has 4 sides.
A parallelogram has opposite sides equal and parallel. A rectangle means the angles are all 90o as well as opposite sides being equal and parallel A rhombus means all sides are equal in length as well as opposite sides being parallel A parallelogram with angles of 90o (also a rectangle) and all sides equal (also a rhombus) is a square.
paramid
They are the sides facing each other at opposite sides.
This just means that opposite sides in a shape (sides that 'look' at each other) are of equal lengths.
A parallelogram has opposite sides and angles congruent which means of equal measure.
Contralateral
Only if it is a trapezoid (US usage) with one set of parallel sides, or a parallelogram with both sets of opposite sides parallel. The term quadrilateral only means that the shape has 4 sides.
A parallelogram has opposite sides equal and parallel. A rectangle means the angles are all 90o as well as opposite sides being equal and parallel A rhombus means all sides are equal in length as well as opposite sides being parallel A parallelogram with angles of 90o (also a rectangle) and all sides equal (also a rhombus) is a square.
paramid
They are the sides facing each other at opposite sides.
rectangle
Opposite sides are parallel.Opposite sides are congruent.Opposite angles are congruent.
The opposite sides of a parallelogram are parallel
A heptagon has seven sides so there are no pairs of opposite sides.
Parallelogram opposite sides are congruent opposite sides parallel