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I can't offer a full proof, but I can suggest some possibilities that will lead you to your proof. In a parallelogram, you can easily demonstrate that the angles formed by a cord extending between parallel lines and the parallel lines themselves, and that are formed on opposite sides of the cord, are equal. This will work for both pairs of triangles in the parallelogram, and can be applied to all of the angles at the corners of the parallelogram. This will lead you to demonstrating that the pairs of triangles "pointing" to each other (not adjacent pairs) are similar, and in fact congruent. From there it is not difficult to establish that the connected sections of the two interior cords are equal.

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17y ago

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Related Questions

Do all the diagonals of parallelograms bisect each other?

Yes


Which kinds of quadrilaterals have diagonals that bisect each other?

Parallelograms.


What quadrilaterals have diagonals that bisect?

A square has two diagonals that bisect each other at 90 degrees


Do all parallelograms have diagonals which bisect?

Yes; all parallelograms have diagonals that bisect each other. Other properties of parallelograms are: * The opposite sides are congruent. * The opposite sides are parallel. * The opposite angles are congruent.


Does a parallelogram have diagonals that bisect each other?

They do in some parallelograms, not in others.


What quadrilaterals bisect each other?

Quadrilaterals do not bisect each other. They could in special cases. In parallelograms (types of quadrilaterals), the diagonals bisect each other.


Do the diagonals of parallelogram bisect each other?

Yes. Other things about parallelograms: -opposite sides are equal in length. -opposite angles are equal in length. -diagonals bisect each other.


Are all diagonals perpendicular in all parallelograms?

No, not all diagonals are perpendicular in all parallelograms. In general parallelograms, the diagonals bisect each other but are not necessarily perpendicular. However, in specific types of parallelograms, such as rhombuses, the diagonals are indeed perpendicular. Thus, the property of perpendicular diagonals is not a characteristic of all parallelograms.


If the diagonals of a parallelogram bisects its angles?

If the diagonals of a parallelogram bisect its angles, then the parallelogram is a rhombus. In a rhombus, all sides are equal, and the diagonals not only bisect each other but also the angles at each vertex. This property distinguishes rhombuses from other types of parallelograms, such as rectangles and general parallelograms, where the diagonals do not necessarily bisect the angles. Thus, the statement implies a specific type of parallelogram.


Do parallelograms always bisect each other?

Parallelograms do not normally bisect each other.


What properties do rhombuses and parrollelagrams share?

Rhombuses and parallelograms both have opposite sides that are parallel and equal in length. Additionally, the opposite angles in each shape are equal, and the diagonals bisect each other. In a rhombus, the diagonals are also perpendicular to each other and bisect the angles, which is not necessarily true for all parallelograms.


Do the diagonals of a parrallelogram bisect each other?

Yes, the diagonals of a parallelogram bisect each other.