A parallelogram with at least one right angle
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.
an angle with a acute and right angle
One pair of perpendicular lines would create one right angle. Some kites have one right angle.
No. Some do, but some don't.
A right angle triangle.
right-angle triangle has at least one right angle .
A right-angle is one of 90 degrees.
A right angle triangle
If one angle is a right angle, it is a right triangle. If one angle is an obtuse angle, it is an obtuse triangle. If there are no right nor obtuse angle then it is an acute triangle.
a right triangle has one right angleA triangle with a right angle is a right triangle.
A right angle is one of 90 degrees. An acute angle of 30 degrees would be one third of that.