6.3 Prove a Quadrilateral is a Parallelogram

Front

In a parallelogram, consecutive angles are __________.

Back

supplementary

Front

A quadrilateral is a parallelogram if ______________ bisect each other.

Back

diagonals

Front

Parallelograms are ...

Back

quadrilaterals

Front

For what value of x is the quadrilateral a parallelogram?

Back

50 degrees

Front

State which method we can use to show that the quadrilateral is a parallelogram.

Back

Both pairs of diagonals bisect each other.

Front

What is a parallelogram?

Back

A quadrilateral with opposite sides that are parallel and equal in length.

Front

What are the properties of the diagonals in a parallelogram?

Back

The diagonals bisect each other.

Front

If one pair of opposite sides of a quadrilateral is both parallel and equal, what can be concluded?

Back

The quadrilateral is a parallelogram.

Front

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

Back

360 degrees.

Front

If two angles of a quadrilateral are supplementary, what can be said about the other two angles?

Back

They are also supplementary.