No , a parallelogram can not have a 90 Degree angle .Reason : A Parallelogram can be defined as a quadrilateral whose two s sides are parallel to each other and all the four angles at the vertices are not 90 degrees or right angles, then the quadrilateral is called a parallelogram.
A parallelogram is a quadrilateral whose opposite sides are parallel and has no right angles
complimentary
It is a right angle, or an angle whose measure is 90 degrees or pi/2 radians.
Less than 90 degrees is an acute angle, a 90 degree angle is a right angle, and an angle greater than 90 degrees is called an obtuse angle.
rectangle
Rectangle, possibly a square if the adjacent sides are also equal.
It is a kite whose diagonals are perpendicular to each other and form 4 right angles.
A quadrilateral having four right angles is called a rectangle.
No , a parallelogram can not have a 90 Degree angle .Reason : A Parallelogram can be defined as a quadrilateral whose two s sides are parallel to each other and all the four angles at the vertices are not 90 degrees or right angles, then the quadrilateral is called a parallelogram.
Right Angle
Rhombus and square are the only quadrilaterals whose diagonals bisect the angles of the quadrilateral. In both these quadrilaterals, the diagonals intersect at right angles, dividing each angle into two equal parts.
It is a quadrilateral whose opposite sides are parallel and has no right angles
Quadrilaterals are a generic class of polygons (shapes that have only straight sides) that simply have 4 sides. "Quadrilateral" literally means "4-sided". Given that, I'm sure you can think of 2 very common quadrilaterals that have right angles: the "rectangle", and a special form of rectangle called a "square". The name "rectangle" literally means "right angle", and is called such because all 4 sides of this type of quadrilateral are connected by right angles. A square is a rectangle, all four of whose sides are equal in length. So a square is a rectangle is a quadrilateral.
a right angle, or a 90 degrees angle
A parallelogram is a quadrilateral whose opposite sides are parallel and has no right angles
A Triangle which do not have a right angle.