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1. List the properties of a parallelogram

2. Is it possible for a trapezoid to be a parallelogram? Why or why not?
2a. Could a rhombus be a square? Why or why not?

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\displaystyle 2b. A rhombus can never be a square because although opposite interiour angles and all four sides are congruent, their interiour angles are not right angles.


\displaystyle 2a. A trapezium is impossibly a parallelogram because a parallelogram has two pairs of parallel sides.


\displaystyle 1. Convex polygon with two pairs of opposite sides that are parallel and congruent [equal in length (see above picture)]

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1. List the properties of a parallelogram 2. Is it possible for a trapezoid to be-example-1
User Shkarik
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Answer:

  1. see the list below
  2. no
  3. yes

Explanation:

1. The dictionary definition of a parallelogram is ...

a quadrilateral with opposite sides parallel

As a consequence of this condition, a number of additional properties arise:

  • opposite sides are the same length
  • opposite angles are congruent
  • adjacent angles are supplementary
  • diagonals bisect each other

__

2. The dictionary definition of a trapezoid (US; trapezium, UK) is ...

a quadrilateral with one pair of parallel sides.

As a consequence of this condition, it is not possible for a trapezoid to be a parallelogram.

__

3. A rhombus is a special case of parallelogram in which all sides are the same length. A square is a special case of rhombus in which all angles are congruent (as are the diagonals). Yes, a rhombus may be a square.

User Tinokaartovuori
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