# What are the conditions for parallelograms?

## What are the conditions for parallelograms?

Properties of parallelograms

• Opposite sides are congruent (AB = DC).
• Opposite angels are congruent (D = B).
• Consecutive angles are supplementary (A + D = 180°).
• If one angle is right, then all angles are right.
• The diagonals of a parallelogram bisect each other.

What are the six conditions of a parallelogram?

Both pairs of opposite sides are congruent. Both pairs of opposite angles are congruent. The diagonals bisect each other. One angle is supplementary to both its consecutive angles.

What are the 5 conditions that make a quadrilateral a parallelogram?

Criteria proving a quadrilateral is parallelogram

• If a quadrilateral has one pair of sides that are both parallel and congruent.
• If all opposite sides of the quadrilateral are congruent.
• Both pairs of opposite sides are parallel.
• Opposite angles are congruent.
• Diagonals bisect.

### Which of the following is a property of all parallelograms?

Here are the four properties of a Parallelogram: Opposite angles are equal. Opposite sides are equal and parallel. Diagonals bisect each other. Sum of any two adjacent angles is 180°

What are the conditions to prove a quadrilateral is a parallelogram?

To prove a quadrilateral is a parallelogram, you must use one of these five ways. Prove that both pairs of opposite sides are parallel. Prove that both pairs of opposite sides are congruent. Prove that one pair of opposite sides is both congruent and parallel.

Which of the following are properties of parallelograms?

## Are the opposite sides of a parallelogram always equal?

The opposite sides of every parallelogram are equal and parallel. The opposite angles are always equal. The sum of adjacent angles is always equal to 180°.

Which of the following properties is true about all parallelograms?

There are six important properties of parallelograms to know: Opposite sides are congruent (AB = DC). Opposite angels are congruent (D = B). Consecutive angles are supplementary (A + D = 180°).

Which of the following characteristics are true of all parallelograms?

They all have the properties of a parallelogram: Their opposite sides are parallel, their diagonals bisect each other and divide the parallelogram into two congruent triangles, and opposite sides and angles are congruent.

### What properties are true for all parallelograms?

Here are the four properties of a Parallelogram:

• Opposite angles are equal.
• Opposite sides are equal and parallel.
• Diagonals bisect each other.
• Sum of any two adjacent angles is 180°

Which of these properties is are true for all parallelograms?

Answer- The four properties of parallelograms are that firstly, opposite sides are congruent (AB = DC). Then, opposite angles are congruent (D = B). Moreover, if one angle is right then automatically all the other angles are right. Further, the diagonals of a parallelogram bisect each other.

Which statement about parallelograms is always true?

Two pairs of opposite sides are congruent. The diagonals are perpendicular to each other. 4 In parallelogram QRST, diagonal is drawn. Which statement must always be true?…

1) The diagonals are congruent.
3) The opposite angles are congruent.
4) The opposite sides are parallel.

## What are the properties of a parallelogram select all that apply?

All parallelograms are squares. In a parallelogram, opposite angles are supplementary. All rectangles are parallelograms. In a parallelogram, all sides are congruent.