Parallelograms Geometry Test

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Questions and Answers

What is the sum of the interior angles of a parallelogram?

  • $180^\circ$
  • $360^\circ$ (correct)
  • $90^\circ$
  • $270^\circ$

What is the relationship between opposite sides of a parallelogram?

  • They are congruent
  • They are parallel
  • They are equal in length (correct)
  • They are perpendicular

What is the name of the line segment that connects the midpoints of two sides of a parallelogram?

  • Diagonal (correct)
  • Altitude
  • Bisector
  • Median

If a quadrilateral has opposite sides that are parallel, what is guaranteed?

<p>Consecutive angles are supplementary (C)</p> Signup and view all the answers

What is guaranteed if a quadrilateral has diagonals that bisect each other?

<p>Opposite angles are congruent (C)</p> Signup and view all the answers

If a quadrilateral has consecutive angles that are supplementary, what can be concluded?

<p>Opposite sides are equal (D)</p> Signup and view all the answers

What is guaranteed if a parallelogram is equiangular?

<p>Opposite sides are parallel (A)</p> Signup and view all the answers

What condition guarantees that a quadrilateral is a parallelogram?

<p>Diagonals bisect each other (D)</p> Signup and view all the answers

In a parallelogram, why do the diagonals bisect each other?

<p>Because the midpoint of one diagonal is also the midpoint of the other diagonal (B)</p> Signup and view all the answers

What must be true for EF to be a midpoint of both AC and BD in a parallelogram?

<p>$AE = EC$ and $BE = ED$ (D)</p> Signup and view all the answers

What is the relationship between the opposite sides of a parallelogram?

<p>They are parallel and congruent (A)</p> Signup and view all the answers

If the opposite angles of a quadrilateral are congruent, what can be concluded?

<p>The quadrilateral is a parallelogram (A)</p> Signup and view all the answers

What is needed to prove that a quadrilateral is a parallelogram using the diagonal bisector property?

<p>To show that the diagonals bisect each other (B)</p> Signup and view all the answers

In the given context, what is the role of points E and F?

<p>They lie on the perpendicular bisectors of AC and BD (D)</p> Signup and view all the answers

Why can we conclude that AE = EC and BE = ED?

<p>Because EG = FH (A)</p> Signup and view all the answers

What is the significance of the lines AG and BH in the context of proving a quadrilateral is a parallelogram?

<p>They are perpendicular bisectors of AB and CD (B)</p> Signup and view all the answers

What conditions can be used to prove that a given quadrilateral is a parallelogram?

<p>All of the above (D)</p> Signup and view all the answers

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