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Yes, each pair of two opposite sides is parallel and equal in length. This is necessary to achieve the symmetry of the angles.
The opposite sides in a parallelogram are parallel and the same length. However, they are not angles at 90 degrees (right angles).
Pentagon
Yes. A parallelogram is defined as having opposite sides that are parallel and equal in length, and opposite angles that are equal.
opposite sides are equal in length and parallel opposite angles are equal adjacent angles add up to 180 degrees no lines of symmetry base x vertical height = area sum of internal angles = 360 degrees sum of external angles = 360 degrees
Yes, each pair of two opposite sides is parallel and equal in length. This is necessary to achieve the symmetry of the angles.
A rectangle.
square
The opposite sides in a parallelogram are parallel and the same length. However, they are not angles at 90 degrees (right angles).
The answer is any rectangle that is not a square: such a rectangle has two lines of symmetry, whereas a square has four.
Pentagon
A Rhombus
Yes. A parallelogram is defined as having opposite sides that are parallel and equal in length, and opposite angles that are equal.
opposite sides are equal in length and parallel opposite angles are equal adjacent angles add up to 180 degrees no lines of symmetry base x vertical height = area sum of internal angles = 360 degrees sum of external angles = 360 degrees
Whether or not the opposing angles of a trapezoid (UK trapezium) are equal depends on the axis of symmetry. A trapezoid (trapezium) can be defined as a quadrilateral with one pair of opposite sides parallel. It is not a parallelogram because only one pair of sides is parallel. It is called a regular trapezoid if the sides that aren't parallel are equal in length and both angles coming from a parallel side are equal
A parallelogram is a quadrilateral with opposite sides that are parallel and equal in length, and opposite angles that are equal. Two ways to describe a parallelogram could be as a shape with opposite sides that are both parallel and equal in length, or as a shape with opposite angles that are equal.
square