What does parallelogram mean?
In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.
Where does the word parallelogram come from?
The word ” parallelogram ” comes from the Greek word “parallelogrammon” (bounded by parallel lines).
What does a parallelogram look like picture?
A Parallelogram is a flat shape with opposite sides parallel and equal in length. NOTE: Squares, Rectangles and Rhombuses are all Parallelograms !
What is an example of parallelogram?
A parallelogram is a shape with four sides, and the sides opposite each other are parallel, meaning they don’t intersect. Examples of parallelograms include squares, rhombuses, and rectangles. Circles, triangles, and trapezoids are not parallelograms .
What shape is a parallelogram?
Parallelogram: A quadrilateral with 2 pairs of parallel sides . Rectangle : A parallelogram with 4 right angles. Rhombus: A parallelogram with 4 sides with equal length .
What else can a parallelogram be called?
If we have a parallelogram where all sides are congruent then we have what is called a rhombus . The properties of parallelograms can be applied on rhombi. If we have a quadrilateral where one pair and only one pair of sides are parallel then we have what is called a trapezoid.
Is Trapezium a parallelogram?
Some define a trapezoid as a quadrilateral having only one pair of parallel sides (the exclusive definition), thereby excluding parallelograms . Others define a trapezoid as a quadrilateral with at least one pair of parallel sides (the inclusive definition), making the parallelogram a special type of trapezoid .
What are the theorems of a parallelogram?
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.
What is the best definition of a parallelogram?
: a quadrilateral with opposite sides parallel and equal.
Why is a parallelogram called a parallelogram?
A parallelogram is a quadrilateral with opposite sides parallel (and therefore opposite angles equal). A quadrilateral with equal sides is called a rhombus, and a parallelogram whose angles are all right angles is called a rectangle.
Does a parallelogram have four right angles?
Special Quadrilaterals A parallelogram has two parallel pairs of opposite sides . A rectangle has two pairs of opposite sides parallel, and four right angles . It is also a parallelogram , since it has two pairs of parallel sides . A square has two pairs of parallel sides , four right angles , and all four sides are equal.
Are angles in a parallelogram equal?
Parallelogram . A parallelogram has two pairs of equal sides. It has two pairs of equal angles . The opposite sides are parallel.
Are all sides equal in a parallelogram?
A parallelogram has opposite sides parallel and equal in length. Also opposite angles are equal (angles “A” are the same, and angles “B” are the same). NOTE: Squares, Rectangles and Rhombuses are all Parallelograms !
What’s the difference between a parallelogram and a rhombus?
In a rhombus , all the four sides are equal and the diagonals intersect at 90 degrees, whereas in a parallelogram , the opposite sides are equal and the diagonals bisect each other.