yes it is
Not always. A parallelogram only has to have two equal parallel sides and its angles does not have to be 90°. Only two types of parallelogram, the rectangle and the square, have four right angles.
Quadrilateral means four sides. Four right angles and four sides is a rectangle and if the sides are equal length it is a square.
A quadrilateral is a polygon with four sides and angles.
A parallelogram does not need to have any right angles at all. It is a 4 sides figure with 2 pair of parallel sides, or you can define it as a quadrilateral with 2 pair of parallel sides. So a square certainly is a parallelogram, but most parallelograms are not squares. A rhombus, a rectangle, and a square are all types of parallelograms.
A quadrilateral with no right-angles would be a rhombus (or parallelogram) A rhombus has four sides, with opposite corner angles equal.
-- Every quadrilateral has four sides.-- If it has no right angles, then it could be a parallelogram, a rhombus,a kite, a trapezoid, or any non-regular quadrilateral.
Parallelogram with four right angles and four equal sides is a square.
A rectangle is actually a parallelogram, or a quadrilateral with two pairs of parallel sides. The thing about a rectangle is that it not only has two parallel sides, it has four right angles. Therefore, the answer to your question is: A rectangle is a parallelogram with four right angles.
A rectangle is classed as a 4 sided quadrilateral in math.
A rectangle is also a polygon, a parallelogram, and a quadrilateral with four right angles.
A parallelogram is a quadrilateral (four-sided polygon) with two pairs of parallel sides. By definition, a parallelogram does not need to have all right angles. Think of rhombuses, which do not have any right angles, yet are parallelograms. Therefore, the answer is no.
Not necessarily. A parallelogram is a quadrilateral with 2 sets of 2 parallel sides. Only rectangles and squares have right angles as all four angles - a rectangle is a "special" parallelogram that has all four angles equal; a square is a "special" rectangle that has all four sides of equal length.
An quadrilateral, which may be a trapezium, parallelogram or kite, but not a rectangle or square
No. A square fits the classification of a quadrilateral and a parallelogram, but that isn't necessarily the definition. A rhombus is a quadrilateral and a parallelogram, and so are other irregular quadrilaterals. The correct definition would be a parallelogram and a quadrilateral with four right angles and all equal sides.