Is it a parallelogram?

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with opposite sides that are both parallel and equal in length.

Front

What are the properties of a parallelogram?

Back

1. Opposite sides are equal in length. 2. Opposite angles are equal. 3. The diagonals bisect each other.

Front

How can you determine if a quadrilateral is a parallelogram using opposite sides?

Back

If both pairs of opposite sides are parallel, then the quadrilateral is a parallelogram.

Front

What does it mean for opposite angles to be congruent in a parallelogram?

Back

If opposite angles are congruent, it means they have the same measure, which is a property of parallelograms.

Front

What theorem states that if one pair of opposite sides is both parallel and congruent, the quadrilateral is a parallelogram?

Back

The theorem states that if one pair of opposite sides is parallel and congruent, then the quadrilateral is a parallelogram.

Front

What is the significance of the diagonals in a parallelogram?

Back

In a parallelogram, the diagonals bisect each other, meaning they cut each other in half.

Front

Can a quadrilateral be a parallelogram if only one pair of opposite sides is parallel?

Back

No, a quadrilateral cannot be a parallelogram if only one pair of opposite sides is parallel.

Front

What is the relationship between the angles in a parallelogram?

Back

In a parallelogram, consecutive angles are supplementary, meaning they add up to 180 degrees.

Front

How do you prove that a quadrilateral is a parallelogram using the properties of its angles?

Back

If both pairs of opposite angles are congruent, then the quadrilateral is a parallelogram.

Front

What is the converse of the property of opposite sides being equal in a parallelogram?

Back

If a quadrilateral has both pairs of opposite sides equal, then it is a parallelogram.