Proving that a Quadrilateral is a Parallelogram

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Created by

Christian Angelo Lira

Philippines

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2	karlie January 13, 2026	% 70	01:51

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Proving that a Quadrilateral is a ParallelogramOnline version Yes or No by Christian Angelo Lira 1 One way to prove a quadrilateral is a parallelogram is by showing that both pairs of opposite sides are parallel. Yes No 2 If the diagonals of a quadrilateral bisect each other, you can conclude that the quadrilateral is a parallelogram. Yes No 3 To prove that a quadrilateral is a parallelogram, it is sufficient to show that one pair of opposite angles is congruent. Yes No 4 A theorem states that if one pair of opposite sides of a quadrilateral is both congruent and parallel, then the quadrilateral must be a parallelogram. Yes No 5 In coordinate geometry, if the slopes of all four sides of a quadrilateral are calculated, and the slopes of the consecutive sides are equal, the figure must be a parallelogram. Yes No 6 Quadrilateral with vertices A(1,4), B(4,6), C(7,4), and D(4,2) can be proven to be a parallelogram by showing that the length of (AB) is equal to the length of (CD) and that (AB) is parallel to (CD). Yes No 7 A quadrilateral is a parallelogram if and only if both pairs of its opposite angles are supplementary. Yes No 8 If you are given that the quadrilateral WXYZ has (WX)∥ (ZY) and (XY)∥ (WZ), the final statement of the proof must be "Quadrilateral WXYZ is a parallelogram" based on the definition of a parallelogram. Yes No 9 Quadrilateral can be proven to be a parallelogram using the property that the diagonals bisect each other. Yes No 10 If the north and south boundaries are parallel, and the east and west boundaries are also parallel, a proof that a parallelogram requires an additional step showing that the diagonals are congruent. Yes No

Proving that a Quadrilateral is a ParallelogramOnline version

Yes or No

by Christian Angelo Lira

One way to prove a quadrilateral is a parallelogram is by showing that both pairs of opposite sides are parallel.

Yes

If the diagonals of a quadrilateral bisect each other, you can conclude that the quadrilateral is a parallelogram.

Yes

To prove that a quadrilateral is a parallelogram, it is sufficient to show that one pair of opposite angles is congruent.

Yes

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

Yes

In coordinate geometry, if the slopes of all four sides of a quadrilateral are calculated, and the slopes of the consecutive sides are equal, the figure must be a parallelogram.

Yes

Quadrilateral with vertices A(1,4), B(4,6), C(7,4), and D(4,2) can be proven to be a parallelogram by showing that the length of (AB) is equal to the length of (CD) and that (AB) is parallel to (CD).

Yes

A quadrilateral is a parallelogram if and only if both pairs of its opposite angles are supplementary.

Yes

If you are given that the quadrilateral WXYZ has (WX)∥ (ZY) and (XY)∥ (WZ), the final statement of the proof must be "Quadrilateral WXYZ is a parallelogram" based on the definition of a parallelogram.

Yes

Quadrilateral can be proven to be a parallelogram using the property that the diagonals bisect each other.

Yes

If the north and south boundaries are parallel, and the east and west boundaries are also parallel, a proof that a parallelogram requires an additional step showing that the diagonals are congruent.

Yes

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Proving that a Quadrilateral is a Parallelogram

Yes or No

About this activity

Created by

Download the paper version to play

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Proving that a Quadrilateral is a ParallelogramOnline version

by Christian Angelo Lira

One way to prove a quadrilateral is a parallelogram is by showing that both pairs of opposite sides are parallel.

If the diagonals of a quadrilateral bisect each other, you can conclude that the quadrilateral is a parallelogram.

To prove that a quadrilateral is a parallelogram, it is sufficient to show that one pair of opposite angles is congruent.

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

In coordinate geometry, if the slopes of all four sides of a quadrilateral are calculated, and the slopes of the consecutive sides are equal, the figure must be a parallelogram.

Quadrilateral with vertices A(1,4), B(4,6), C(7,4), and D(4,2) can be proven to be a parallelogram by showing that the length of (AB) is equal to the length of (CD) and that (AB) is parallel to (CD).

A quadrilateral is a parallelogram if and only if both pairs of its opposite angles are supplementary.

If you are given that the quadrilateral WXYZ has (WX)∥ (ZY) and (XY)∥ (WZ), the final statement of the proof must be "Quadrilateral WXYZ is a parallelogram" based on the definition of a parallelogram.

Quadrilateral can be proven to be a parallelogram using the property that the diagonals bisect each other.

If the north and south boundaries are parallel, and the east and west boundaries are also parallel, a proof that a parallelogram requires an additional step showing that the diagonals are congruent.

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