If a parallelogram has a right angle it is a rectangle.
Rectangles are parallelograms with right angles.
Right triangle square rectangles
All have 90 degree angles.
Rectangles just need 4 sides that all have right angles, which a square has. A square needs all sides equal and at a right angle, which a rectangle doesn't have
If a parallelogram has a right angle it is a rectangle.
Many. If there is no right angle it's not a rectangle...
Rectangles are parallelograms with right angles.
The simple answer is no, not all parallelograms have at least one right angle. However, there are some that do. Rectangles and squares are 'special' parallelograms that all have at least one right angle.
squares and rectangles.
A right angle is a 90* degrees angle is like a corner of a doora 90 degree angleexample:all rectangles have only right angles
Squares, rectangles, and some triangles, most commonly. Any polygon could have a right angle if it is irregular.
when you measure polygons that use right angles, like squares or rectangles.
usually its for marking a right angle
Right triangle square rectangles
All have 90 degree angles.
Rectangles just need 4 sides that all have right angles, which a square has. A square needs all sides equal and at a right angle, which a rectangle doesn't have