All four-sided figures are parallelograms
explain pls

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Step-by-step explanation:

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Answer and Step-by-step explanation:

A rectangle is a parallelogram with four right angles, so all rectangles are also parallelograms and quadrilaterals. On the other hand, not all quadrilaterals and parallelograms are rectangles. A rectangle has all the properties of a parallelogram, plus the following: The diagonals are congruent.

Definition 1: A parallelogram is a four sided figure where the opposite sides are parallel.

Theorem 1: In a parallelogram, the opposite sides are of equal length.

Theorem 2: If the opposite sides in a quadrilateral are the same length, then the figure is a parallelogram.

Theorem 3: A quadrilateral is a parallelogram if and only if the diagonals bisect each other.

Theorem 4: If one pair of opposite sides in a four sided figure are both opposite and parallel, then the figure is a parallelogram.

Definition 2: A rectangle is a quadrilateral where all four angles are the same size.

Theorem 5: A rectangle is a parallelogram.

Theorem 6: A rectangle is a parallelogram if and only if the diagonals are the same length.

Definition 3: A rhombus is a quadrilateral where all four sides have the same length.

Theorem 7: A rhombus is a parallelogram.

Theorem 8: A quadrilateral is a rhombus if and only if the diagonals are perpendicular bisectors of each other.

Theorem 9: A quadrilateral is a rhombus if and only if the diagonals bisect all the vertex angles.

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answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.