not true
rectangle
No because it could be an irregular quadrilateral that includes a right angle. A rectangle has four right angles.Yes, a parallelogram with a right angle is always a rectangle. In fact, in my geometry book, some 55 years ago, such was the definition of rectangle.A parallelogram with one right angle will always have four right angles.It is true that you can draw an irregular quadrilateral with a right angle which is not a rectangle but the figure will not be a parallelogram.
rectangle
FALSE because a rectangle has 4 right angles.
if a quadrilateral has three right angles will also have have a fourth right angle. Making it a rectangle. The addition of all the angles in a triangle is 360 degrees. If there are three right angles, and you subtract their addition by 360, you will get ninty degrees.
A rectangle or a square.
a square or a rectangle
That is called a rectangle.
A square or a rectangle
A quadrilateral with all right angles is a rectangle.
No, because a rectangle has 4 right angles.
A rectangle, or perhaps a square.
a rectangle
rectangle
rectangle
A square or a rectangle
It is a square or a rectangle where each interior angle is a right angle of 90 degrees.