Rectangles have congruent adjacent angles.
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A parallelogram.Types of parallelogram:Rhomboid - A quadrilateral whose opposite sides are parallel and adjacent sides are unequal, and whose angles are not right anglesRectangle - A parallelogram with four angles of equal sizeRhombus - A parallelogram with four sides of equal length.Square - A parallelogram with four sides of equal length and four angles of equal size (right angles).
No, a rectangle has opposite side which are equal in length.
A rectangle with 4 equal sides and angles is often called a square.
you can prove any one of these statements to prove that quadrilateral is a rectangle: -- Opposite sides are parallel and any one angle is a right angle. -- Opposite sides are equal and any one angle is a right angle. -- All four angles are right angles. -- Adjacent angles are complementary, and one of them is a right angle. -- Opposite sides are either equal or parallel, and area is equal to the product of two adjacent sides. -- Diagonals are equal.
The main difference between a rectangle and a parallelogram that makes rectangle a special case of the parallelogram is the fact that all the angles of a rectangle are equal to 90 degrees. This is not the case in a parallelogram because the adjacent angles are only supplementary to each other.