Is a octagon a parallelogram yes or no?
A parallelogram is a four-sided shape with opposite sides that are both parallel and equal in length. Finally, a polygon is a closed, two-dimensional shape with many sides. Everything from a triangle to an octagon to a megagon is a type of polygon.
Is trapezoid a parallelogram?
They agree that a parallelogram is a quadrilateral with two pairs of parallel sides. A trapezoid has one pair of parallel sides and a parallelogram has two pairs of parallel sides. So a parallelogram is also a trapezoid.
Can a quadrilateral really be a parallelogram?
Sometimes in geometry, something you think you know, like a parallelogram, may really be something else, like only a quadrilateral. Here are six ways to mathematically prove a given quadrilateral is a parallelogram. Quadrilaterals are four-sided, closed polygons. Their sides can be of any length, their angles either congruent or not.
When are the opposite sides of a parallelogram equal?
Theorem 1. In a parallelogram, opposite sides are equal. Conversely, if the opposite sides in a quadrilateral are equal, then it is a parallelogram.
What are the properties of a parallel quadrilateral?
There are many special types of quadrilateral. A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel. A parallelogram also has the following properties: Opposite angles are congruent; Opposite sides are congruent; Adjacent angles are supplementary; The diagonals bisect each other.
How are two parallel angles supplementary in a parallelogram?
In a parallelogram, any two consecutive angles are supplementary, no matter which pair you pick. Parallelograms are special types of quadrilaterals with opposite sides parallel. Parallelograms have these identifying properties: Parallelograms get their names from having two pairs of parallel opposite sides.
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