The difference is 270 degrees.
A right angle is an angle that measures 90 degrees. A squaer angle is a typographic error.
Two perpendicular lines make up a right angle
A right angle is formed when two lines meet at an angle whose measure is 90 degrees. A right triangle is a triangle in which one angle is a right angle. (Note: there cannot be more than one.)
A right triangle has a 90 degree angle and an acute triangle has an angle smaller than 90 degrees.
A right triangle has one angle a right angle (90o) An obtuse triangle has one angle an obtuse angle (> 90o) An acute triangle has all angles acute (< 90o)
A square is a rhombus that has a right angle in it.
An obtuse angle is greater than 90 but less than 180 degrees whereas other angles are acute angle, right angle or reflex angle.
A right triangle is a triangle that contains a 90 degree angle, an obtuse triangle contains an angle that is from 91 degrees to 179 degrees.
If the angle between the displacement and force applied is less than a right angle, then it is Positive Work done. If the angle between the displacement and the force applied is greater than a right angle then it is Negative Work done. If the displacement and force are at right angles, or either is zero, then it is Zero Work done.
A vertical angle runs up and down or from top to bottom or vise versa. A horizontal angle runs from left to right or vice versa.
So that you know the difference between right angle triangles and other types of triangles.